[Included]: The package includes 4 collapsible water bottles in 4 different colors (black, red, white, blue). [Large Capacity]: Each water bag measures 25.5 x 13 x 7cm and has a capacity of 700ml. You can fill it with water or other beverage of your choice. [High Quality]: The collapsible water bottle is made of BPA-free, food-grade plastic. The water bag is leak-proof and reusable, suitable for travel and daily use. [Easy to Carry]: Our water bottles are collapsible and easy to carry. Each water bottle is equipped with a buckle that can be hung on any backpack or suitcase. There are two different opening methods, which is convenient for you to fill water and drink. [Wide Application]: You can take our water bag with you when exercising, traveling and camping. It can stand on its own when filled with water and can be folded to save space when empty.