FOOD GRADE & SAFE: The collapsible water bottle is made of PE, PA, food grade PET materials, lightweight and reusable, safe and durable with long service life. Leak-proof design: easy to seal tightly and won't leak even if you squeeze it. They can be shaken, dropped or even thrown and will not leak. The wide mouth makes it easy to clean the inside. EASY TO CARRY - Our collapsible water bottle comes with a hook designed to connect the water bottle to your bag, bicycle or belt. Easier to carry and less likely to be lost. Folds easily after drinking water to save space. 700ML CAPACITY: The soft and foldable water bottle for outdoor activities is designed with a large capacity of 700ml and can withstand the temperature 'water from -45 to 120 . Wide Usage: Lightweight and foldable water bottle is perfect for camping, hiking, cycling, running, jogging, gym training, summer camp travel or other outdoor activities.