Use safe siliconThe water bottle is BPA free and odorless, made of BPA-free food-grade organic silicone, passed LFGB, SGS and as obtained FDA certification, to ensure safe drinking, no PVC, latex, phthalate and plastic smell, etc. odor. It is safe and hygienic, because it uses a food-grade liquid silicone bottle and a food-grade plastic cap,children can also use it with confidence. LEAK-PROOF AND EASY-TO-CLEANThe patented sealing screw cap is used to eliminate leakage and splashing and effectively prevent the bottle from accidentally opening. The wide-mouth design makes it easier to clean the inside of the collapsible soft water container or add ice or lemon to it. When using for the first time, it is recommended to soak in boiling water for 10 minutes for thorough cleaning. Cold and heat resistanceThis product has excellent heat resistance and can withstand temperatures from -50 to 200C. It has leak-proof and impact-resistant properties and is very suitable for all activities and sports. Even if it is squeezed or pushed, it will be tightly sealed. Even if you put it in a backpack or computer bag, it will not leak.We do not recommend using it in liquids higher than 158F (70C) to avoid hot hands. Lightweight and convenientThe 20oz(600mL) portable silicone bottle is a foldable type. It takes advantage of the characteristics of soft silicone and can be folded compactly after drinking, making it easy to carry.Allows you to hydrate your body at any time and any where.