Standard Mouth Flip Top Lid 1.0 (for 21 oz)

Rated 4.3 stars
4,625 Reviews
$7.59 $9.49

The most advanced fully insulated flip top lid, yet. Fits our 21 oz bottle and 1 gallon product line and multi-compatible with many other standard water bottles.

After 2 years, The Coldest Water Flip Top Insulated Cap is finally here. It was initially built for Professional Athletes in high-performing sports.

We believe in taking cold water on the go wherever you are, whether your biking, cycling, running, jogging or going to the beach. This cap allows you to drink effortlessly with one hand. Simply flip the top, and drink water from it. It is BPA and Latex Free, and easy to clean.

Rubber Flip Top Bacteria Resistant: The flip top has a unique tab that allows you to push it without your fingers touching the mouthpiece.


We believe in multi-compatibility, so we’ve extensively tested this with The Coldest Water Bottle, as well as other Stainless Steel Bottle Brands.


The Coldest Water Bottle, HydroFlask Standard Mouth Bottles, Klean Kanteen Classic Mouth Bottles, Rehydrate Pro Standard Bottles, WaterVault Water Bottle 24 oz Only* Bottles


Stainless Steel Bottles with 1.75 inches inner screw mouth diameter.


Hydroflask Wide-mouth Bottles, Hydroflask Narrow-mouth bottles, Widemouth Bottles. Narrow-mouth bottles, WaterVault K2/Soda Bottles. Klean Kanteen Soda Bottles

Rated 4.3 stars
Based on 4,625 reviews
Total 5 star reviews: 3.2k Total 4 star reviews: 492 Total 3 star reviews: 367 Total 2 star reviews: 195 Total 1 star reviews: 349
80%would recommend this product
4,625 reviews
  • CA
    Christine A.
    Verified Buyer
    I recommend this product
    Rated 4 stars
    4 minutes ago
    Love it but…

    The straw did not fit so I am using it without the straw

  • TG
    Tia G.
    Verified Buyer
    I recommend this product
    Rated 5 stars
    3 hours ago
    Only way to go

    I only use these lids!

  • BS
    Bobbie S.
    Verified Buyer
    I recommend this product
    Rated 5 stars
    6 days ago
    Great cup

    My sons has three of the coldest water cups. This is the only cup my son will us. I do have to replace the lid. He is hard on his cups. But worth the money I spend on the cups.

  • RC
    Ray C.
    Verified Buyer
    I recommend this product
    Rated 5 stars
    1 week ago
    New flip Top lid

    Very efficient and user-friendly.

  • DG
    Dominique G.
    I recommend this product
    Rated 4 stars
    5 months ago
    Good but there are flaws

    I'm glad I have a straw to drink my water for my water bottle but everytime i add water and this straw in my bottle I have to move it around a bit to actually get it tight and closed.

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