Grosmimi Stainless Steel Straw Cup with Flip Top - 10oz (12 Months+)
Developmentally-engineered stainless steel straw cup for Grosmimi babies.
STAINLESS STEEL STRAW CUP
Grosmimi Stainless Steel Food Tray with 5 Compartment
$17.00
Dimensions: 26.0cm W x 18.0cm L
Weight: 380g (without suction) / 450g (with suction)
Plate is made of stainless steel
Lid is made of plastic
Suction is made of silicone
New Collaboration Release : Knotted × Grosmimi!
Product made of high-quality stainless steel, BPA free.
Consists of the different compartments (5 sections).
Compatible with silicone plate suction for table grip. (Silicone Plate Suction is included in option with suction)
Suitable for hot/warm food.
Anti-bacterial material, easy to clean, durable product.
Dishwasher safe, please wash before using (please follow the steps on the manual).New Collaboration Release:Knotted × Grosmimi
How to clean your tray first time
1. Using cooking oil, please wipe the tray gently until abrasives are all gone.
2. Please put it in hot water with 2-3 scoops of citric acid, and leave it for 2 hours.
3. Please wash the tray once more with neutral detergent and let it dry.
RECOMMENDATIONS & WARNINGS:
- Please wash before and after use
- Carefully clean the tray with a soft sponge to prevent scratches during cleaning
- It may cause rust when exposed to moisture for a long time, so dry immediately after cleaning
- To prevent damage to the product, do not use acid, salt, chlorine bleach, abrasives, etc.
- If the product is cracked or deformed, stop using it immediately
- The Tray is NOT microwaveable. Only the tray is okay to put it in a boiling water
What makes it special
Stainless Steel
Stainless steel is a durable, rust-resistant material widely used in medical and food applications. It does not absorb odor or color and maintains its quality even after repeated sterilization. Strong, hygienic, and highly resistant to temperature changes, it is an excellent choice for baby bottles, cups, and everyday kitchenware.
Innovative Technology
Made from liquefied silicone—the same material used for baby bottle nipples—the straw offers a familiar texture that feels gentle and natural for babies. This helps them transition to using a straw without resistance, while the cross-cut design prevents leaks and backflow for a cleaner drinking experience.
Effortless Cleaning & Assembly
All parts are designed to be easily removable, making cleaning simple and convenient. The cup is dishwasher safe, and its intuitive design allows for quick and easy reassembly after washing.
Customize your own bottle
A variety of kits are available (sold separately), allowing you to choose the setup that best fits your baby’s feeding style. With a wide range of options, you can mix and match parts to create your own customized bottle. The system is also compatible with selected products from other brands.
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Parents ask, science answers.
What makes PPSU safer than regular plastic?
PPSU (Polyphenylsulfone) is a medical-grade polymer used in surgical instruments. Unlike standard PP or PC plastics, PPSU releases 2,750x fewer microplastics when exposed to heat — verified by peer-reviewed research published in Nature Food (2020). It contains zero BPA, BPS, or BPF.
How do I sterilize Grosmimi products?
PPSU withstands temperatures up to 180°C. You can boil, steam-sterilize, or UV-sterilize safely. Our products are rated for 1,000+ sterilization cycles with zero degradation — no warping, no discoloration, no chemical leaching.
What age range are your products designed for?
Grosmimi products cover ages 0 to 4 years, mapped to developmental milestones. Baby bottles for 0–6 months, straw cups for 6–18 months, tumblers for 18–36 months, and tableware for 12–48 months. Each product is engineered for the specific motor and oral development stage.
Is the straw cup really leak-proof?
Yes. Our patented PureSeal system uses a weighted stainless-steel ball and silicone valve to create a zero-leak seal in any orientation. Sideways, upside-down, in a diaper bag — guaranteed leak-proof or your money back.
Why is Grosmimi more expensive than other brands?
Standard PP bottles cost less because polypropylene is cheap — but it releases millions of microplastic particles per feeding. PPSU is a medical-grade material that costs significantly more to manufacture. Combined with SUS316 stainless steel components and precision engineering, the price reflects genuine material science, not marketing.
Where can I buy Grosmimi products?
Grosmimi is available on Amazon, our official Shopify store, and through select retailers including Target, Nordstrom, and Babylist. International shipping is available through our online store.
Do you offer a warranty or guarantee?
Every Grosmimi product comes with a leak-proof guarantee and a 1-year warranty against manufacturing defects. If your product leaks or shows signs of material degradation under normal use, we will replace it — no questions asked.