LEAK-PROOF AND EASY-TO-CLEAN: The 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. Cold and heat resistance: This 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. Lightweight and convenient: The 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. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.