HIGH QUALITY MATERIAL TRAVEL WATER BOTTLE: The collapsible travel mug is made of food grade silicone and plastic ABS, BPA free and non-toxic to ensure safe drinking. Silicone foldable cups are easy to clean, durable and reusable, environmentally friendly to avoid unnecessary plastic waste. LEAK-PROOF & DURABLE: The double sided folding water bottle has a leak-proof seal that effectively eliminates splashing and won't leak when shaken. The lightweight folding camping mug is made of soft materials that is not easily deformed when squeezed and is impact resistant when dropped from a height, which is a safe silicone water bottle for kids to use. FOLDABLE & PORTABLE: The lightweight silicone folding cup is only 0.43cm high after being folded, less than 1/5 of the height before folding, saving space and easy to carry, perfect for putting in your backpack, pocket or handbag, allowing you to drink whenever and wherever you want but don't have the cup, and store it after drinking. Note: The bottle cap needs to be opened before being folded for storage. LARGE CAPACITY & ANTI-SCALDING: The foldable running drinks bottles have a large capacity of 500ml, meeting the needs of people to drink. The height before folding is 16.8cm and after folding is only 0.43cm, easy to carry and store. The collapsible drinking cup can withstand a temperature range from -76(-60) to 392(200) and is anti-scalding, so you don't have to worry about scalding your hands when pouring hot water or holding the bottle.