[Use safe silica gel] The water bottle does not contain BPA and has no peculiar smell. It uses BPA-free food-grade organic silica gel to ensure safe drinking, free of PVC, latex, phthalate and plastic odors, and other odors. It is safe and hygienic, because the food-grade liquid silicone milk bottle and food-grade plastic bottle cap are used, children can also use it with confidence. ^[Leakproof and easy to clean] The patented sealing screw cap prevents water leakage and splashing and effectively prevents accidental opening of the bottle. The wide mouth design makes it easier to clean the inside of the collapsible soft water container or add ice or lemon. When using it for the first time, it is recommended to soak it in boiling water for 10 minutes to clean it thoroughly. ^[Cold resistance and heat resistance] This product has excellent heat resistance and can withstand temperatures from -50 to 200C. It has leak-proof and shock-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 above 158F (70C) to avoid hot hands. ^[Lightweight and convenient] The 20oz (600mL) portable silicone baby bottle is foldable. Make full use of the softness of silica gel, which can be folded compactly after drinking, making it easy to carry. Allows you to replenish moisture for your body anytime, anywhere. ^Suitable for sports fitness, business travel, daily life.^