OuterEQ Collapsible Sports Water Bottle, 20 oz Capacity, BPA Free, Silicone Water Bottle For Bike/Hiking Soft and Foldable, save space and easy to carry, can be placed in any backpack pocket, and will not leave the crease. Food-grade silicone material, BPA free, FDA Certification! Can be frozen. Can be Used as waterproof container, to carrying powdered food. Easy to clean. Microbrial resistant, non toxic and recyclable. No more bad smells or after-taste. 0.55 Litres(20 OZ) Sports Water Bottle, perfect size for outdoor sport.