High quality 600D nylon, durable, waterproof and abrasion resistant. It is a necessary tool for outdoor activities. These water bottle bags are easy to carry and allow you to go hiking, camping, backpacking. This kind of water bottle bag has been thickened to protect the design . It can effectively prevent bumps and drops, avoid collisions and damages, which play a very good role in protecting the water bottle. The water bottle bag has a drawstring strap at the top, which is adjustable and more convenient to use. This water bottle bag has two high-strength D-shaped buckles, which can be used to hang small flashlights and other outdoor equipment. This water bottle bag is equipped with a system connection belt, can be easily attached to large bags, can also be hung on the belt to use, which makes the bag more personalized and practical.