This eceen rave hydration backpack is such a clever idea. It has s 2L water bladder bag integrated into the design. Perfect for long walks, hiking, music festivals, raves, biking, climbing, and just about any outdoors activity. I love the unique style and colors too. The hydration bladder holds about a half a gallon and is completely leak proof. Love how easy is it to refill and can be removed quickly. This hydration #backpack keeps water cool all day and has a wide 2-inch screw cap so you can even put ice in it. Another plus is it's extremely lightweight and has adjustable chest and shoulder straps to fit kids to adults. All in all I think it's the perfect bag for any outdoor adventure. It's currently available on amazon at ➡www.amazon.com/dp/B07FSBYJ6M/