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Grosmimi Stainless Steel Straw Cup with Flip Top - 6oz (12 Months+) - Zezebaebae

Grosmimi Stainless Steel Straw Cup with Flip Top - 6oz (12 Months+)

$38.90

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  • Capacity: 6oz (200ml)
  • Dimensions: 15.5cm H x 10.0cm W x 6.9cm D
  • Weight: 188g
  • Bottle is made of stainless steel
  • Lid and handle are made of BPA-free plastic
  • Straw is made of platinum silicone

Grosmimi Stainless Steel Straw Cup is made with an outer layer of high-quality 304 stainless steel and an inner layer of premium 314 stainless steel. The newest version features great improvements in coating, design, and the addition of a flip-top. Age Recommendation: Suitable for babies12+ months, toddlers transitioning from Stage 1 straw cups, or parents looking for a firmer straw option as teething begins.

This cup with the newest, dome shaped flip-top lid (One Touch Cap), has a lock feature, and is much easier for the baby to use with one hand. Stage 2 Straw kit is included

Vacuum Insulated: Keeps beverages hot and cold up to 6 hours.

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)

Easy to Clean: It is so easy to separate all the parts for hygienic cleaning and reassemble them in a few seconds

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

- The cup is NOT microwaveable

- Straws are not suitable for a child under 6 months

- Please read the information on the leaflet enclosed before use

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.

Stainless Steel
  • Stainless Steel
  • Verified Benefit

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.

Innovative Technology
  • Innovative Technology
  • Verified Benefit

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.

Effortless Cleaning & Assembly
  • Effortless Cleaning &
  • Verified Benefit

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.

Customize your own bottle
  • Customize your own
  • Verified Benefit

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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.