Safe and healthy: The foldable water bottle is made of environmentally friendly PET+PE material, which is non-toxic, BPA-free, and odorless. You don't need to worry about health problems. The small water bag is transparent and soft, waterproof, and reusable. Leak-proof and stable: Despite its flexibility, the container is completely leak-proof and stable when full. The water bag is suitable for temperatures from -20C to +50C. When the liquid is three-quarters full, it can also be frozen and used as a cold compress. Unique design: This water bag can be folded, rolled, or squeezed when empty, and can stand upright when full. The hook design also makes it easy to carry in backpacks. Reusable: They are the best replacement for fragile glassware. Durable and washable, they can be reused after careful cleaning. Foldable and Flexible: Stands upright when fully folded, rolls up or folds flat when empty. Wide Application: Lightweight and foldable. Best suited for camping, hiking, cycling, running, jogging, fitness, summer camp and other outdoor activities. Description: 1. Best for camping, hiking, cycling, trekking, running, gym - summer camp or traveling. 2. This waterproof bag can be folded, rolled up or squashed and stays upright when full. You can carry it anytime, anywhere. Very convenient. 3. They are the best replacement for fragile glassware. Durable and washable, it can be reused after careful cleaning. Specifications: Material: PE+PA+PET Quantity: 4 Dimensions: 30 x 24 x 5 cm Color: Multicolor Package Includes: 4 x Foldable Water Bottle Note: 1. Please allow a margin of error of 1-2 cm due to manual measurement. Thank you for your understanding. 2. Monitors are not calibrated same, the color of the item shown in the pictures may be slightly different from the real object. Please take the real one as standard.