The Coldest Water Standard Size Mouth Hydro Sports Straw Cap Flip Top Lid - Multi-compatible with Standard Flask Mouth Size Stainless Steel Water BottlesCategory: Antique Bottle CapsThe Coldest Water® Cap, Patent Pending, 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 drink effortlessly with one hand. Simply flip the top, and drink water from it.It is BPA Free, and easy to clean. Flip Top Bacteria Resistant: The flip top has a unique tab that allows you to push it without your fingers touching the mouth piece. Multi-compatibility Technology: We believe in multi-compatibility, so we've extensively tested this with The Coldest Water Bottle, as well as other Stainless Steel Bottle Brands. Verified Compatibility with: The Coldest Water® Bottle HydroFlask®Standard Mouth Bottles Klean Kanteen®Classic Mouth Bottles Rehydrate Pro®Standard Bottles WaterVault® Water Bottle 24 oz Only* Bottles Possible compatibility: Stainless Steel Bottles with 1.75 inches inner screw mouth diameter. Incompatible / Does not work with: Hydroflask Wide-mouth Bottles Hydroflask Narrow-mouth bottles Widemouth Bottles Narrow-mouth bottles WaterVault K2/Soda Bottles Klean Kanteen Soda Bottles 100% Happiness Guaranteed! We offer 100% ROCK-SOLID Happiness Guarantee. If you have any issues, get in touch with us and we'll always make it right. Click the BUY NOW Button on the top of the page to experience an easier drinking experience! How to get the straw on if you have trouble: If you have trouble attaching straw, run warm/hot tap water over it, and then apply it. Should go on easier. Also note this straw is purposely long to fit all bottle heights. Trim straw to your bottle height.