Great for camping, hiking and cycling, this Hydration Backpack features a durable nylon and mesh sports style backpack equipped with a water bladder with an easy access flexible drinking tube, an adjustable outer elastic cord with reflective strips, large-grid adjustable mesh straps for air flow and two hanging hooks. Measures approximately 10" x 3" x 19". 2 liter capacity (72 fluid ounces). BPA free. Comes in assorted colors. Comes packaged in a poly bag.