[Product Information]

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Innovative Design--Soft and collapsible design， saves space when it's put away and makes it portable for outdoor use; its innovative air valve allows air to fill up the bottle and stands straight， even when it's empty or contains only a small amount of liquid
LEAK PROOF - Patent gas return air hole design. No water out without pressure， effectively avoid the water leakage problems.
Medical Grade Liquid Silicone. Safe and ECO-friendly-Non BPA，Non toxic， certified BPA free， FDA approved， with no harmful toxins， this safe， eco friendly water bottle has zero aftertaste or odor. Made from 100% medical-grade material.
Endures a wide range of temperatures from -40℃ to 100℃; use with refrigerated or boiled liquids; crash proof and anti-collision design makes it a perfect companion for bicycling， running， swimming， outdoor activities， extreme sports，etc
Large Capacity--Large capacity of 750 mL， and only 155 g in weight;