Is Grosmimi BPA-free?

Yes. All Grosmimi bottles and cups are made from 100% PPSU plastic, which is completely free of BPA, BPS, and phthalates. PPSU is the same material used in medical-grade equipment.

What age is the Grosmimi straw cup for?

Grosmimi straw cups are designed for babies 6 months and older. The weighted straw lets babies drink at any angle, making it ideal for the transition from bottle to cup.

What is PPSU and why is it safer than regular plastic?

PPSU (polyphenylsulfone) is a high-performance plastic that withstands boiling, sterilization, and microwaving without leaching chemicals. Unlike polycarbonate or standard plastics, it remains stable at high temperatures and does not degrade over time.

Can Grosmimi bottles be sterilized?

Yes. PPSU is safe for all sterilization methods including boiling water, UV sterilizers, and steam sterilizers. It will not warp or release harmful substances when heated.

Where is Grosmimi made?

Grosmimi products are designed and manufactured in South Korea. The brand is one of the most trusted baby bottle brands in Korea, widely used in Korean postpartum care centers.

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Grosmimi PPSU Straw Cup - 10oz (6 Months+)

(13)

$24.90

Free shipping on orders $75+ · Ships in 1-3 business days

Choose your baby's stage· One cup that grows with your baby

Material: PPSU

Size & Type: 10oz & Regular Top

Color: Peach

Buy 1pcs Grosmimi PPSU Straw Cup - 10oz (6 Months+)

Standard price

$24.90

Buy 2pcs Grosmimi PPSU Straw Cup - 10oz (6 Months+)

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$47.31$49.80

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Buy 3pcs Grosmimi PPSU Straw Cup - 10oz (6 Months+)

You save 10%

$67.23$74.70

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PPSU Safe PlasticBPA-FreeFood-Grade Silicone

Description

Highly Functional: Grosmimi bottles are made of PPSU, a FDA compliant material commonly used for medical devices requiring steam sterilization. It is incredibly durable, high temperature resistant (-4°F to 392°F) and BPA Free

Leak-Free: ‘+ CUT’ prevents any leak from the bottle, 2-way of using allows baby to drink no matter sitting down (with the tube) or lying down (without the tube)

Variety of disinfecting methods: Hot Water Disinfection Safe, UV Light Disinfection Cabinet Safe, Microwave Safe

Super Easy to Clean: The wide-neck design makes the cup is so easy to be cleaned

PPSU straw cup is suited for 6 Month +

The softness and smoothness of the teat & straw protect baby’s teeth and gums.

The cup comes with Stage 1 Straw kit and it can be replaced with Grosmimi Replacement Straw kit Stage 2 for babies over 12 months

Specs

Capacity: 10oz (300ml)
Dimensions: 18.2cm H x 10.0cm W x 6.9cm D
Weight: 118g

Materials

Bottle is made of PPSU
Lid and handle are made of BPA-free plastic
Straw is made of platinum silicone

Care Guide

RECOMMENDATIONS & WARNINGS:

Always use this product with adult supervision
Never use straw teats as a soother
Continuous and prolonged sucking of fluids will cause tooth decay
Always check food temperature before feeding
Inspect before each use and pull the feeding teat in all directions. Throw away at the first signs of damage or weakness
Do NOT leave in disinfectant for longer than recommended, as this may weaken the teat
Before first use place a feeding teat in boiling water for 30 seconds. This is to ensure hygiene
Please wash before using
Please use a straw brush when washing the straw and teat
Avoid direct sunlight or fire
Please replace the silicone parts every 2-3 months for hygienic issues
Take extra care when microwave heating. Always stir heated food to ensure even heat distribution and test the temperature before serving
Straws are not suitable for a child under 6 months
Please read the information on the leaflet enclosed before use

Expert-Tested

Curated by parents and pediatricians

Fast Shipping

Free $75+ · Standard $5.99 · Ships in 1-3 days

30-Day Returns

Hassle-free returns on all orders

Authentic Imports

Directly from trusted Korean makers

Leak-proof sips, happy moments.

Korea’s No.1 Toddler Straw Cup

946,000+

Cups sold annually

30+ Countries

Loved by moms worldwide

Patented tech

On the straw-nipple design

CPSIA Compliant

Tested by a CPSC-verified lab

Leak-Proof Design

Squeeze it. Pinch it. It won't leak.

The + cut straw tip seals under pressure. Toss it in the diaper bag — no spills, no mess.

✓ + Cut seals under pressure. No extra valves.

Durable PPSU

Babies drop things. This cup handles it.

FDA compliant PPSU is incredibly durable — used for medical devices that get sterilized over and over.

✓ Incredibly durable FDA-compliant PPSU

360° Rotating Handles

Grip from any direction. No wrong way to hold it.

Handles rotate freely so small hands can grip from any angle.

✓ 360° rotating — grip from any direction

Sealed in Motion

Shake it. Swing it. Still sealed.

Toddlers don't just drink — they shake, throw, and swing. The + cut straw stays sealed through all of it.

✓ + Cut stays sealed during motion

Premium PPSU Material

PPSU (Polyphenylsulfone) is a type of high performance polymer. Material commonly used for medical devices requiring repeated steam sterilization. It is incredibly durable and temperature resistant.

PPSU is perfect material for baby bottles or cups. It is a plastic but has the benefits of glass. Which does not absorb odor or color and you can sterilize without any deformation.

✓There is no better choice.

Now there are two types of PPSU body colors. One is the original PPSU color yellow and the other is dark grey which is newly released.

✓Try Grosmimi PPSU.

Grosmimi PPSU Straw Cup — 200ml and 300ml size comparison

Selection Guide

Start small, then size up.

When using a straw cup for the first time, a 200ml cup with a short tube is easier for babies to handle. If your baby starts drinking more, or you plan to use the cup for milk or beverages, we recommend a 300ml straw cup.

200ml

Compact, lighter, easier to hold

300ml

More volume for bigger appetites

← This product

When babies start teething, they begin to chew on the straw teat. For babies over 12 months who tend to bite, a firmer straw teat is available separately.

PPSU vs PP material comparison — PPSU is medical-grade BPA-free, heat resistant to 200°C. PP is limited to 120°C.

The Material

Why PPSU matters.

Not all baby bottle plastics are the same. PPSU is an FDA-compliant thermoplastic commonly used for medical devices that require repeated high-temperature steam sterilization — the same class of material trusted for reusable hospital equipment. That stability is why Grosmimi builds every cup and bottle from it.

FDA

Compliant — used for medical devices requiring steam sterilization

BPA Free

Zero Bisphenol A in the material

392°F

Heat resistance — safe from -4°F to 392°F

Peer-reviewed research has measured microplastic release from baby bottles under heat. Findings show polypropylene (PP) bottles release substantially more particles than PPSU and other advanced materials. The directional finding that PPSU is more stable than PP under heat is consistent across studies.

References

Grows With Your Baby

One system, every stage.

Grosmimi's full product line covers every stage — from bottle to straw cup to tumbler. Each product is compatible with the same accessories, so you invest in a system, not throwaway cups.

Grosmimi product range — bottle, straw cup, flip top, and tumbler stages

You're starting with: Straw Cup (6 Months+)

What's Included

Everything in the box

Includes Stage 1 Straw Kit. Additional straw teats and accessories are available separately.

🍼

PPSU Bottle

FDA compliant

🔘

One Touch Cap

Steel-free

🥤

Silicone Straw Teat

Included

🤝

Handle

360° rotating

📏

Silicone Straw Tube

Replaceable

⚖️

Weighted Straw Kit

Any-angle drinking

Care & Sterilization

How to sterilize each part

Method	Bottle (PPSU)	Cap (PP)	Straw/Teat (Silicone)	Weighted Bead
Hot Water	✓	✓	✓	✓
UV Sterilizer	✓	✓	✗	✓
Dishwasher	✓	✓	✗	✓
Steam	✓	✓	✓	✓
Microwave	✓	✗	✗	✗

Tips: Replace silicone parts every 2-3 months, or immediately if torn. Hot water sterilization within 5 minutes. Always disassemble all parts before cleaning.

The Brand