What is PPSU, and why is it better than standard plastic?

PPSU is a premium material used in hospitals commonly used for medical devices. Unlike standard PP plastic, it has extreme heat resistance, resists scratches to prevent bacterial growth, and will never warp, stain, or leach microplastics.

My cup is leaking from the straw. How do I fix it?

Check if the cross-cut (+) valve is torn. If it is intact, simply pinch the air valve on the silicone base 3–4 times after closing the lid. This equalizes internal pressure (especially from warm drinks) and instantly stops backflow.

What is the difference between Stage 1 and Stage 2 straws?

They share the same leak-proof valve and flow rate. Stage 1 is ultra-soft for sensitive baby gums. Stage 2 uses firmer, high-density silicone built to withstand biting and chewing from older toddlers.

Is the cup dishwasher safe? Which rack should I use?

Yes, it is top-rack dishwasher safe. Keep all parts away from the bottom heating element to protect the materials.

How do I wash the silicone straw without tearing it?

Separate the straw nipple from the tube. Insert your straw brush gently, and twist it side-to-side to clean. Never scrub the brush up and down vertically, as this may puncture the cross-cut valve and cause leaks.

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GROSMIMI Baby Straw Cup, Spill-Proof PPSU Sippy Cup with Rotating Handles for Babies & Toddlers 6+ Months, Silicone Straw, BPA-Free, Stage 1, 10oz/300ml (Aqua Green)

Product ID: 186000263

Details

Brand
GROSMIMI
Capacity
10 ounces
Color
Aqua green
Material
(PPSU)
Special Feature
BPA Free

💧10oz spill-proof capacity

🔄360° rotating handles

🧼dishwasher & sterilizer safe

$71.21

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Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚼 Sip smarter, spill never — the ultimate baby cup upgrade!

EFFORTLESS CLEANING - Fully disassembles and withstands dishwasher, microwave, and sterilizer cycles without wear.
MESS FREE FIRST SIPS - Spill-proof cross-cut straw and flip-top lid keep every drop in the cup, not on your floor.
ADAPTIVE STRAW STAGES - Soft Stage 1 straw for gentle gums, upgrade to firmer Stage 2 as your baby grows.
PREMIUM SAFE MATERIALS - Crafted from BPA-free PPSU and food-grade silicone for worry-free hydration.
ERGONOMIC 360 HANDLES - Rotating handles follow your baby’s grip naturally, making every sip comfortable and easy.

The GROSMIMI Baby Straw Cup is a 10oz BPA-free sippy cup designed for babies 6+ months, featuring a spill-proof cross-cut silicone straw, premium PPSU construction, and 360° rotating handles for ergonomic drinking. It supports two straw firmness stages for growing toddlers and is fully dishwasher, microwave, and sterilizer safe for busy parents.

Specifications

ASIN	B07YL2FT96
Age Range Description	Kid
Best Sellers Rank	#1,249 in Baby ( See Top 100 in Baby ) #42 in Toddler Cups
Brand Name	GROSMIMI
Capacity	10 ounces
Color	Aqua green
Customer Reviews	4.3 4.3 out of 5 stars (4,318)
Included Components	Cups
Item Dimensions W x H	3.9"W x 7.5"H
Manufacturer Part Number	Parent_PPSU_Strawcup
Material Features	Insulated
Material Type	Polyphenylsulfone (PPSU)
Model Number	1002-A
Number of Items	1
Occasion	Everyday
Other Special Features of the Product	BPA Free
Product Care Instructions	Hand Wash Only
Product Style	Tableware
Reusability	Reusable
Shape	Round
Size	10 Ounces
Theme	Baby
Unit Count	1 Count

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$71.21

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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