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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

related to straw nipples

CPSIA Compliant

Tested by a CPSC - verified Laboratories

Zezebaebae
One of the Top 5 Best-Selling Toddler Straw Cup Brands on Amazon US
#1 Best-Selling PPSU Straw Cup

Over 8,000 Reviews ★ 4.5 out of 5.0 Rating
2025 Forbes The 8 Best Straw Cups For Babies Loved By Moms And Experts
“Splurge-Worthy Cup That Rarely Leaks and Grows with them”

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.

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Weighted Spout kit

  • Age: +6m
  • Strength: Soft
  • Durability: Weak
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Weighted Straw kit

  • Age: +6m
  • Strength: Soft
  • Durability: Weak
Shop Now

Straw Kit Stage 1

  • Age: +6m
  • Strength: Soft
  • Durability: Weak
Shop Now

Straw Kit Stage 2

  • Age: +12m
  • Strength: Hard
  • Durability: Strong
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Stage2 Nipple only

  • Age: +12m
  • Strength: Hard
  • Durability: Strong
Shop Now

We're answerable!

4.8
Rated 4.8 out of 5 stars
Based on 10 reviews
Total 5 star reviews: 8 Total 4 star reviews: 2 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
100%would recommend this product
10 reviews
  • D
    Diane
    Reviewing
    Grosmimi PPSU Straw Cup with Flip Top - 10oz (300ml) Stage 2 Straw
    I recommend this product
    Rated 5 out of 5 stars
    1 week ago
    5 Stars

    It's easy to clean, and my one year old can hold and drink independently with no issues.

  • K
    Koki
    Verified Reviewer
    Reviewing
    Grosmimi PPSU Straw Cup with Flip Top - 10oz (300ml) Stage 2 Straw
    I recommend this product
    Baby's Age 6 Months - 2 Years
    Baby's Height 26.5 Inches to 31.5 Inches
    Rated 5 out of 5 stars
    3 weeks ago
    My toddler's favorite

    My toddler loves this straw bottle! We love that it's leak proof and easy to clean. She's able to chug a good amount of water by using this.

  • AS
    Andrew S.
    Reviewing
    Grosmimi PPSU Straw Cup with Flip Top - 10oz (300ml) Stage 2 Straw
    I recommend this product
    Rated 4 out of 5 stars
    1 year ago
    4 Stars

    This is the only bottle that we were able to find that truly is spill proof while also allowing you to sip through the straw effectively. My only knock on it is that the straw usually sits on on side of the bottle so unless you have the bottle rotated in that direction while drinking you can'st get any liquid out of it when it'ss getting toward the bottom of your drink.

  • A
    Andrew
    Reviewing
    Grosmimi PPSU Straw Cup with Flip Top - 10oz (300ml) Stage 2 Straw
    I recommend this product
    Rated 4 out of 5 stars
    1 year ago
    4 Stars

    This is the only bottle that we were able to find that truly is spill proof while also allowing you to sip through the straw effectively. My only knock on it is that the straw usually sits on on side of the bottle so unless you have the bottle rotated in that direction while drinking you can’t get any liquid out of it when it’s getting toward the bottom of your drink.

  • E
    Ellen
    Reviewing
    Grosmimi PPSU Straw Cup with Flip Top - 10oz (300ml) Stage 2 Straw
    I recommend this product
    Rated 5 out of 5 stars
    1 year ago
    5 Stars

    Grosmimi’s are the Best drinking cups for toddlers