This bag is perfect for the anyone who loves the outdoors. Keep hydrated with this bag. Great for hikes, long walks, festivals and hanging out at the park. Constructred with waterproof 600D high density nylon, this hydration bag can keep your thirst at bay. With 2L of capacity, you can go even longer with water than your typical water bottles. The flexible straw makes drinking easy and the adjustable straps can fit anyone.