The silicone flip top seals when plugged but is not upside-down, bottom-of-the-bag leakproof.Read more...
* Narrow mouth spout for easy on-the-go drinking
* Wide mouth access is ice-cube friendly and cleans easily
* Compatible with all 12, 16 and 22 oz Lifefactory bottles
* Handle pivots upright for carrying and out of the way while drinking
* BPA/BPS, phthalate, PVC and polycarbonate free
* Cap and handle made of polypropylene (pp#5); Flip top made of silicone
* Dishwasher safe; Place on top rack
* Made in the U.S.
* All materials are FDA approved