{"id":3608,"date":"2026-02-26T19:42:51","date_gmt":"2026-02-27T03:42:51","guid":{"rendered":"https:\/\/6284dccae3.nxcli.io\/?p=3608"},"modified":"2026-08-03T19:40:50","modified_gmt":"2026-08-04T02:40:50","slug":"ppsu-baby-cups-safer-than-regular-plastic","status":"publish","type":"post","link":"https:\/\/6284dccae3.nxcli.io\/ppsu-baby-cups-safer-than-regular-plastic\/","title":{"rendered":"What Is PPSU? Why It&#8217;s Safer Than Plastic for Baby Cups (2026)"},"content":{"rendered":"<!-- ONZ-CAROUSEL-CSS --><style>\/* Mid-article product pick *\/\n.onz-midpick{margin:36px 0;padding:28px 24px;background:#FFF9F4;border:1px dashed #e0d5c9;border-radius:14px;position:relative}\n.onz-mp-label{display:block;font-size:10px!important;font-weight:700!important;letter-spacing:.12em!important;text-transform:uppercase!important;color:#335348!important;margin-bottom:16px}\n.onz-mp-cards{display:flex;gap:20px}\n.onz-mp-card{display:flex;gap:18px;text-decoration:none!important;flex:1;align-items:center;padding:12px;background:#fff;border-radius:12px;border:1px solid #f0ebe4;transition:box-shadow .25s ease,transform .25s ease}\n.onz-mp-card:hover{box-shadow:0 6px 20px rgba(0,0,0,.08);transform:translateY(-2px)}\n.onz-mp-img{flex:0 0 35%;max-width:140px;background:#FFF0F3;border-radius:10px;padding:12px;display:flex;align-items:center;justify-content:center}\n.onz-mp-card:nth-child(2) .onz-mp-img{background:#F0F7FF}\n.onz-mp-img img{width:100%;height:100px;object-fit:contain;display:block}\n.onz-mp-info{flex:1;display:flex;flex-direction:column;gap:4px}\n.onz-mp-vendor{font-size:10px!important;font-weight:800!important;letter-spacing:.1em!important;text-transform:uppercase!important;color:#335348!important}\n.onz-mp-title{color:#2a2a2a!important;font-size:14px!important;font-weight:600!important;line-height:1.4!important}\n.onz-mp-price{color:#335348!important;font-size:18px!important;font-weight:800!important;margin:2px 0}\n.onz-mp-cta{color:#335348!important;font-size:12px!important;font-weight:700!important;margin-top:4px;transition:color .2s}\n.onz-mp-card:hover .onz-mp-cta{color:#4a7a6a!important}\n\/* Bottom carousel \u2014 toned-down, consistent with homepage *\/\n.onz-bestsellers{width:100%;background:#FFF9F4;border-top:none;position:relative;overflow:hidden}\n.onz-bestsellers::before,.onz-bestsellers::after{display:none}\n.onz-bestsellers-inner{max-width:1280px;margin:0 auto;padding:52px 24px 64px;position:relative}\n.onz-bs-header{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px;padding-bottom:20px;border-bottom:2px solid #335348}\n.onz-bs-header-text{flex:1}\n.onz-bs-heading{color:#335348!important;font-size:28px!important;font-weight:900!important;letter-spacing:.02em!important;margin:0 0 4px!important;line-height:1.15!important}\n.onz-bs-subheading{color:#999!important;font-size:13px!important;margin:0!important;font-style:italic}\n.onz-bs-shopall{font-size:12px!important;font-weight:700!important;text-transform:uppercase!important;letter-spacing:.1em!important;text-decoration:none!important;background:#335348;color:#fff!important;padding:8px 18px;border-radius:20px;transition:transform .2s,box-shadow .2s;white-space:nowrap;flex-shrink:0}\n.onz-bs-shopall:hover{transform:scale(1.05);box-shadow:0 4px 12px rgba(51,83,72,.3)}\n.onz-bs-carousel{position:relative}\n.onz-bs-track{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;scroll-behavior:smooth;-webkit-overflow-scrolling:touch;scrollbar-width:none;padding:8px 4px 16px}\n.onz-bs-track::-webkit-scrollbar{display:none}\n.onz-bs-arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:2;width:42px;height:42px;border:2px solid #335348;border-radius:50%;background:#fff;color:#335348;font-size:20px;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .25s ease;box-shadow:0 3px 10px rgba(0,0,0,.08)}\n.onz-bs-arrow:hover{background:#335348;color:#fff;transform:translateY(-50%) scale(1.1);box-shadow:0 5px 16px rgba(51,83,72,.25)}\n.onz-bs-arrow--left{left:-16px}.onz-bs-arrow--right{right:-16px}\n.onz-bs-card{flex:0 0 calc(25% - 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These innovative cups offer superior durability and chemical-free peace of mind that traditional plastic alternatives simply can&#8217;t match.<\/p>\n<div class=\"onz-summary-body\">PPSU (polyphenylsulfone) is a medical-grade plastic superior to regular plastics for baby cups because it contains no bisphenol compounds at all and maintains chemical stability even under repeated high-heat sterilization, while generic &#8220;plastic&#8221; labels often hide materials like polycarbonate that may leach harmful chemicals when stressed or heated. Upgrading to PPSU eliminates the risk posed by BPA substitutes like BPS and BPF that are increasingly used in cheaper plastics but remain under-researched for safety<\/div>\n<\/div>\n<p>Here&#8217;s what most baby product labels won&#8217;t tell you: &#8220;BPA-free&#8221; doesn&#8217;t automatically mean safe. It means one specific chemical was removed \u2014 and sometimes replaced with something just as questionable. Most parents shopping for baby cups are scanning for that BPA-free badge and moving on, which is completely understandable. But the material itself \u2014 what the cup is <em>actually made of<\/em> \u2014 matters a lot more than a single label claim. PPSU baby cups have become the go-to choice for parents who&#8217;ve gone down that rabbit hole, and for good reason. This article breaks down exactly what PPSU is, how it compares to regular plastic, and whether the upgrade is worth it \u2014 without the marketing fluff.<\/p>\n<h2>What &#8220;Regular Plastic&#8221; Actually Means (And Why It&#8217;s Vague on Purpose)<\/h2>\n<p>When a baby cup says &#8220;plastic,&#8221; that could mean about a dozen different things. Polypropylene (PP), Tritan, ABS, polycarbonate \u2014 they&#8217;re all &#8220;plastic,&#8221; and they behave very differently under heat, stress, and repeated sterilisation. The reason labels stay vague is mostly commercial: &#8220;made with polycarbonate&#8221; sounds a lot worse once people know that&#8217;s the material that historically contained BPA. So brands lean on the broad term and let parents fill in the blanks.<\/p>\n<p>The ones worth being cautious about are anything older or unverified that could contain BPA (bisphenol A) or its chemical cousins \u2014 BPS and BPF \u2014 which are increasingly used as substitutes and are showing similar concerns in early research. The FDA has banned BPA in baby bottles and sippy cups specifically, but the broader category of bisphenol compounds is still an active area of study. That&#8217;s the gap PPSU fills.<\/p>\n<h2>So What Is PPSU, Exactly?<\/h2>\n<p>PPSU stands for polyphenylsulfone. It&#8217;s a high-performance thermoplastic \u2014 the same category of material used in medical-grade equipment and aircraft components \u2014 which gives you a sense of how seriously it&#8217;s been stress-tested. In the baby product world, it&#8217;s used because it&#8217;s exceptionally resistant to heat and chemical leaching, even under repeated sterilisation cycles.<\/p>\n<p>The key properties that make PPSU relevant for baby cups:<\/p>\n<ul>\n<li><strong>BPA-free, BPS-free, BPF-free:<\/strong> It doesn&#8217;t contain bisphenol compounds at all \u2014 it&#8217;s not just had them removed, it was never formulated with them.<\/li>\n<li><strong>High heat resistance:<\/strong> PPSU can withstand sterilisation temperatures (including steam and boiling) without degrading or warping \u2014 which is the point at which lower-grade plastics tend to leach.<\/li>\n<li><strong>Chemical stability:<\/strong> It doesn&#8217;t break down into microparticles as quickly under mechanical stress (think: toddler throwing it across the kitchen for the fourth time today).<\/li>\n<li><strong>Durability:<\/strong> It&#8217;s impact-resistant in a way that regular PP or Tritan often isn&#8217;t \u2014 which matters when you&#8217;re sterilising the same cup 300 times over 18 months.<\/li>\n<\/ul>\n<p>It&#8217;s also naturally amber\/golden in colour \u2014 that distinctive translucent brown you&#8217;ll notice on PPSU baby products is the material itself, not a dye.<\/p>\n<h2>The Leaching Problem: Why Heat and Stress Change Everything<\/h2>\n<p>Here&#8217;s the thing about plastic safety that gets lost in the label conversation: most plastics are relatively stable at room temperature. The problem happens when you introduce heat, UV exposure, or physical wear \u2014 all of which are constant in baby cup life. Sterilising, dishwashing, microwaving, dropping \u2014 each of these stresses the material and increases the likelihood of chemical migration into whatever&#8217;s inside the cup.<\/p>\n<p>Studies on bisphenol alternatives (BPS and BPF) have raised concerns precisely because they were introduced as heat-stable swaps for BPA \u2014 and yet research published in peer-reviewed journals has found detectable migration under thermal stress in some formulations. PPSU sidesteps this category of concern entirely because it&#8217;s a structurally different class of polymer with a far higher thermal stability threshold. It&#8217;s not that PPSU is perfectly inert (no material is), but its degradation profile under the conditions of normal baby-product use is significantly lower than most conventional plastics.<\/p>\n<figure class=\"onz-article-img\" style=\"margin:2.5rem 0;\"><img src=\"https:\/\/onzenna.com\/a\/blog\/wp-content\/uploads\/2026\/02\/post-3608-is-ppsu-safer-than-regular-plastic-for-b-mid.webp\" alt=\"Baby curiously exploring and discovering in a natural home setting\" width=\"900\" height=\"900\" style=\"max-width:100%;height:auto;border-radius:8px;\" loading=\"lazy\" decoding=\"async\" \/><\/figure>\n\n\n\n\n\n\n<!-- ONZ-MID-PICK --><div style=\"margin:36px 0;padding:28px 24px;background:#FFF9F4;border:1px dashed #e0d5c9;border-radius:14px\"><span style=\"display:block;font-size:10px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:#335348 !important;margin-bottom:16px\">Picked for this article<\/span><div style=\"display:flex;flex-wrap:wrap;gap:20px\"><a href=\"https:\/\/onzenna.com\/products\/ppsu-straw-cup-10oz-300ml?utm_source=blog&#038;utm_medium=content&#038;utm_campaign=blog_midpick_260727&#038;utm_content=fix260802\" target=\"_blank\" rel=\"noopener\" style=\"display:flex;gap:18px;text-decoration:none !important;color:#22312c !important;flex:1 1 260px;min-width:240px;align-items:center;padding:12px;background:#fff;border-radius:12px;border:1px solid #f0ebe4\"><div style=\"flex:0 0 35%;max-width:140px;background:#FFF0F3;border-radius:10px;padding:12px;display:flex;align-items:center;justify-content:center\"><img decoding=\"async\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0738\/7876\/5890\/files\/grosmimi-ppsu-straw-cup-10oz-6-months-2647327_400x.png?v=1780047072\" alt=\"Grosmimi PPSU Straw Cup - 10oz (6 Months+)\" loading=\"lazy\" style=\"width:100%;height:100px;object-fit:contain;display:block\"><\/div><div style=\"flex:1;display:flex;flex-direction:column;gap:4px\"><span style=\"font-size:10px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:#335348 !important\">Grosmimi<\/span><span style=\"color:#2a2a2a !important;font-size:14px;font-weight:600;line-height:1.4\">Grosmimi PPSU Straw Cup &#8211; 10oz (6 Months+)<\/span><span style=\"color:#335348 !important;font-size:18px;font-weight:800;margin:2px 0;display:block\">$24.90<\/span><span style=\"color:#b45309 !important;font-size:12px;font-weight:700;margin-top:4px\">Shop Now &rarr;<\/span><\/div><\/a><a href=\"https:\/\/onzenna.com\/products\/grosmimi-stainless-steel-straw-cup-with-flip-top-10oz-300ml?utm_source=blog&#038;utm_medium=content&#038;utm_campaign=blog_midpick_260727&#038;utm_content=fix260802\" target=\"_blank\" rel=\"noopener\" style=\"display:flex;gap:18px;text-decoration:none !important;color:#22312c !important;flex:1 1 260px;min-width:240px;align-items:center;padding:12px;background:#fff;border-radius:12px;border:1px solid #f0ebe4\"><div style=\"flex:0 0 35%;max-width:140px;background:#F0F7FF;border-radius:10px;padding:12px;display:flex;align-items:center;justify-content:center\"><img decoding=\"async\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0738\/7876\/5890\/files\/grosmimi-stainless-steel-straw-cup-with-flip-top-10oz-12-months-2204065_400x.webp?v=1770248040\" alt=\"Grosmimi Stainless Steel Straw Cup with Flip Top - 10oz (12 Months+)\" loading=\"lazy\" style=\"width:100%;height:100px;object-fit:contain;display:block\"><\/div><div style=\"flex:1;display:flex;flex-direction:column;gap:4px\"><span style=\"font-size:10px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:#335348 !important\">Grosmimi<\/span><span style=\"color:#2a2a2a !important;font-size:14px;font-weight:600;line-height:1.4\">Grosmimi Stainless Steel Straw Cup with Flip Top &#8211; 10oz (12 Months+)<\/span><span style=\"color:#335348 !important;font-size:18px;font-weight:800;margin:2px 0;display:block\">$46.80<\/span><span style=\"color:#b45309 !important;font-size:12px;font-weight:700;margin-top:4px\">Shop Now &rarr;<\/span><\/div><\/a><\/div><\/div><!-- ONZ-MID-PICK -->\n\n<h2>PPSU vs. The Other &#8220;Safe&#8221; Materials You&#8217;ll See<\/h2>\n<p>You&#8217;ll encounter a few other materials positioned as the safe alternatives. Here&#8217;s the honest breakdown:<\/p>\n<ul>\n<li><strong>Tritan:<\/strong> BPA-free and popular, but some independent research has raised questions about estrogenic activity in certain Tritan formulations. The debate is ongoing. It&#8217;s likely fine for most uses but doesn&#8217;t have the same clinical track record as PPSU.<\/li>\n<li><strong>Polypropylene (PP):<\/strong> One of the safer conventional plastics, widely used, generally considered low-risk. Less heat-stable than PPSU and more prone to wear over time, but a reasonable mid-range option.<\/li>\n<li><strong>Silicone:<\/strong> Food-grade silicone is extremely inert and heat-stable \u2014 genuinely one of the safest materials for baby products. Often used for sleeves, spouts, and straws rather than the cup body itself because of cost and weight.<\/li>\n<li><strong>Glass:<\/strong> Chemically inert and the safest from a leaching perspective. The trade-off is obvious when a toddler is involved.<\/li>\n<li><strong>PPSU:<\/strong> Sits between glass and polypropylene in terms of real-world safety profile \u2014 the safest rigid plastic option with the durability to actually survive daily use.<\/li>\n<\/ul>\n<h2>What This Means for Straw Cups Specifically<\/h2>\n<p>Straw cups are where material quality really matters. The cup body is one thing, but the straw itself \u2014 which goes directly in your baby&#8217;s mouth and gets exposed to saliva, milk, and repeated heat sterilisation \u2014 is where you want the cleanest material possible. A lot of budget straw cups use lower-grade plastics for the straw insert specifically because it&#8217;s a small component that doesn&#8217;t get the same scrutiny as the main bottle body. Worth checking.<\/p>\n<p>The AAP recommends transitioning babies away from bottles toward open cups or straw cups starting around 12 months, noting that prolonged bottle use can affect oral motor development and dentition. If you&#8217;re making that transition and picking a straw cup that&#8217;s going to live in your kid&#8217;s hands for the next two years, PPSU is the material you want \u2014 both for the safety profile and because it actually holds up to the abuse.<\/p>\n<p>One option worth knowing about: the <a href=\"https:\/\/onzenna.com\/products\/ppsu-straw-cup-10oz-300ml?utm_source=blog&#038;utm_medium=content&#038;utm_campaign=blog_midpick_260727&#038;utm_content=inline260802\" target=\"_blank\" rel=\"noopener\">Grosmimi PPSU Straw Cup 10oz<\/a>, available at Onzenna, is made from PPSU throughout \u2014 body and straw \u2014 not just the outer shell. That distinction matters, because it&#8217;s the straw that actually contacts your baby&#8217;s mouth through every single use.<\/p>\n<h2>How to Actually Read a Baby Cup Label<\/h2>\n<p>A few things to look for \u2014 and a few things to ignore:<\/p>\n<ul>\n<li><strong>Look for:<\/strong> Specific material listed (PPSU, PP, silicone). &#8220;Food-grade&#8221; designation. Independent safety certifications (FDA, LFGB, or equivalent).<\/li>\n<li><strong>Be skeptical of:<\/strong> &#8220;BPA-free&#8221; as the only claim. &#8220;Non-toxic&#8221; without any further specification \u2014 that phrase has no regulatory definition. &#8220;Natural&#8221; materials that turn out to be plastic with a rebrand.<\/li>\n<li><strong>Check:<\/strong> Whether the straw\/spout material is listed separately. Many brands spec the cup body in PPSU but don&#8217;t clarify the straw material \u2014 which is the part actually in contact with your baby&#8217;s mouth.<\/li>\n<li><strong>Ignore:<\/strong> Vague &#8220;premium plastic&#8221; language. Colour as a safety indicator (PPSU is amber, but not everything amber is PPSU).<\/li>\n<\/ul>\n<h2>The Bottom Line on PPSU Baby Cups<\/h2>\n<p>Is PPSU safer than regular plastic for baby cups? Yes \u2014 meaningfully so. Not because it&#8217;s magic, but because it&#8217;s a structurally more stable material that doesn&#8217;t rely on chemical additives that can migrate under heat and stress. The &#8220;BPA-free&#8221; label on a regular plastic cup is a floor, not a ceiling. PPSU sets a higher bar.<\/p>\n<p>That doesn&#8217;t mean every other plastic cup is dangerous \u2014 it means that if you&#8217;re the kind of parent who reads ingredient labels and wants to actually understand what&#8217;s in your kid&#8217;s hands, material choice matters. The price difference is real but it&#8217;s not dramatic, especially for a product that replaces bottles for the next 18-24 months of your kid&#8217;s life.<\/p>\n<p>Pick the material, pick it once, move on. That&#8217;s the zen here.<\/p>\n<figure class=\"onz-article-img\" style=\"margin:2.5rem 0;\"><img src=\"https:\/\/onzenna.com\/a\/blog\/wp-content\/uploads\/2026\/02\/post-3608-is-ppsu-safer-than-regular-plastic-for-b-end.webp\" alt=\"Tender parent-child connection in golden warm light, cozy home\" width=\"900\" height=\"900\" style=\"max-width:100%;height:auto;border-radius:8px;\" loading=\"lazy\" decoding=\"async\" \/><\/figure>\n<h2>Sources<\/h2>\n<p><strong>U.S. Food and Drug Administration (FDA)<\/strong> \u2014 Guidance on BPA safety in food contact materials and the ban on BPA in infant feeding products (fda.gov)<\/p>\n<p><strong>American Academy of Pediatrics (AAP)<\/strong> \u2014 Recommendations on bottle weaning and transition to cup feeding starting at 12 months, and guidance on food contact chemical exposure in children (aap.org)<\/p>\n<\/p>\n\n<!-- onzenna-cluster-nav -->\n<div class=\"onz-cluster-nav\"><a class=\"onz-cluster-nav-link\" href=\"https:\/\/onzenna.com\/a\/blog\/best-straw-cup-for-baby\/\">Best Straw Cups for Babies in 2026: The Only Guide You Need<\/a><\/div>\n<!-- \/onzenna-cluster-nav -->\n\n<h2>Frequently Asked Questions<\/h2>\n<h3>Is PPSU approved as safe for baby products?<\/h3>\n<p>Yes. PPSU is used in FDA-regulated food contact applications and is widely used in medical devices. It does not contain BPA, BPS, or BPF, and has a strong safety profile under the heat and sterilisation conditions typical of baby product use.<\/p>\n<h3>Can you sterilise PPSU baby cups in boiling water or a steam steriliser?<\/h3>\n<p>Yes \u2014 this is one of PPSU&#8217;s main advantages over regular plastic. It&#8217;s heat-stable up to around 180\u00b0C (356\u00b0F), which means it handles steam sterilisation, boiling, and dishwasher cycles without warping or degrading the way lower-grade plastics can.<\/p>\n<h3>What&#8217;s the difference between PPSU and Tritan for baby cups?<\/h3>\n<p>Both are BPA-free, but they&#8217;re different materials. Tritan is a copolyester plastic that&#8217;s clear and lightweight \u2014 it&#8217;s popular but some independent research has raised questions about estrogenic activity in certain formulations. PPSU is a higher-grade thermoplastic with a more established heat-stability and chemical-inertness record in clinical and food-grade applications.<\/p>\n<h3>Are PPSU straw cups worth the extra cost?<\/h3>\n<p>If you&#8217;re transitioning away from bottles around 12 months (as the AAP recommends), you&#8217;re buying a cup that will be in daily use for a long time. The durability of PPSU means it typically outlasts cheaper alternatives even with heavy sterilisation use \u2014 so the cost-per-use gap is smaller than the sticker price suggests.<\/p>\n<h3>How do I know if a cup is really PPSU and not just labelled as such?<\/h3>\n<p>Check that the brand lists the specific material (polyphenylsulfone or PPSU) rather than just &#8220;BPA-free plastic.&#8221; Genuine PPSU has a characteristic amber\/golden translucent colour \u2014 it&#8217;s not naturally clear. Look for products with third-party certifications (FDA compliance, EU LFGB, or equivalent) and buy from brands that list full material specs, not just marketing claims.<\/p>\n\n<!-- ONZ-BOTTOM-CAROUSEL --><div class=\"onz-bestsellers--post\" style=\"width:100%;max-width:100%;box-sizing:border-box;margin:24px 0 0;padding:24px 0 8px;border-top:1px solid #e8e4de\"><div style=\"display:flex;align-items:center;justify-content:space-between;margin-bottom:16px\"><span style=\"color:#335348;font-size:11px;font-weight:700;letter-spacing:.12em;text-transform:uppercase\">You Might Also Like<\/span><a href=\"https:\/\/onzenna.com\/collections\/all?utm_source=blog&#038;utm_medium=content&#038;utm_campaign=blog_carousel_260728\" style=\"font-size:11px;font-weight:600;text-decoration:none !important;color:#335348 !important;letter-spacing:.05em\">Shop All &rarr;<\/a><\/div><div style=\"position:relative\"><button onclick=\"document.getElementById('onzPostCarousel').scrollBy({left:-220,behavior:'smooth'})\" style=\"position:absolute;top:50%;transform:translateY(-50%);z-index:2;width:30px;height:30px;border:1px solid #ddd;border-radius:50%;background:#fff;color:#335348;font-size:16px;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:0 1px 4px rgba(0,0,0,.08);left:-6px\" aria-label=\"Scroll left\">&#8249;<\/button><div id=\"onzPostCarousel\" style=\"display:flex;gap:14px;overflow-x:auto;scroll-snap-type:x mandatory;scroll-behavior:smooth;-webkit-overflow-scrolling:touch;scrollbar-width:none;padding:4px 0 8px\"><a href=\"https:\/\/onzenna.com\/products\/ppsu-straw-cup-with-flip-top-6oz-200ml?utm_source=blog&#038;utm_medium=content&#038;utm_campaign=blog_carousel_260728\" target=\"_blank\" rel=\"noopener\" style=\"flex:0 0 calc(33.33% - 10px);scroll-snap-align:start;display:flex;flex-direction:column;text-decoration:none !important;color:#335348 !important;background:#fff;border-radius:10px;overflow:hidden;border:1px solid #eee;min-width:0\"><div style=\"overflow:hidden;display:flex;align-items:center;justify-content:center;padding:12px;background:#fafafa\"><img decoding=\"async\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0738\/7876\/5890\/files\/grosmimi-ppsu-straw-cup-with-flip-top-6oz-12-months-2135896_400x.webp?v=1766435769\" alt=\"Grosmimi PPSU Straw Cup with Flip Top - 6oz (12 Months+)\" loading=\"lazy\" style=\"width:100%;height:100px;object-fit:contain;display:block\"><\/div><div style=\"padding:10px 12px 12px;display:flex;flex-direction:column;align-items:flex-start\"><span style=\"font-size:9px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;margin-bottom:2px;color:#999 !important\">Grosmimi<\/span><span style=\"color:#2a2a2a !important;font-size:12px;font-weight:600;line-height:1.3;margin:0 0 4px\">Grosmimi PPSU Straw Cup with Flip Top &#8211; 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PPSU is used in FDA-regulated food contact applications and is widely used in medical devices. It does not contain BPA, BPS, or BPF, and has a strong safety profile under the heat and sterilisation conditions typical of baby product use.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can you sterilise PPSU baby cups in boiling water or a steam steriliser?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes \u2014 this is one of PPSU\u2019s main advantages over regular plastic. It\u2019s heat-stable up to around 180\u00b0C (356\u00b0F), which means it handles steam sterilisation, boiling, and dishwasher cycles without warping or degrading the way lower-grade plastics can.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What\u2019s the difference between PPSU and Tritan for baby cups?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Both are BPA-free, but they\u2019re different materials. Tritan is a copolyester plastic that\u2019s clear and lightweight \u2014 it\u2019s popular but some independent research has raised questions about estrogenic activity in certain formulations. PPSU is a higher-grade thermoplastic with a more established heat-stability and chemical-inertness record in clinical and food-grade applications.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are PPSU straw cups worth the extra cost?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"If you\u2019re transitioning away from bottles around 12 months (as the AAP recommends), you\u2019re buying a cup that will be in daily use for a long time. 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