The Blue WACOOL Magic Hydration Pack Backpack is a medium-sized backpack designed specifically for Hydration to enjoy hiking and outdoor activities. Made with durable nylon material, this backpack features a solid blue color and a zip closure for easy access. The nylon trim and frame material ensure durability and longevity, while the nylon handle/strap material provides comfortable carrying. Perfect for multisport use, this backpack is ideal for those looking for a reliable hydration solution for their adventure-packed lifestyle. this bag does not have a bag. I did the description to best of my. ability. if description is wrong wording then please look at pictures. this bag is sold as seen and As-Is.