(2) USWE Backpack Hydration Bladder. Lots of storage pockets with separation. One pocket has a water resistant zipper. Center compartment opens large enough to carry a lightweight jacket. All straps velcro adjustable for size. Includes brand new hydration bladder and brand new bite-piece. (2) available, $45 each. I typically meet buyers at the (Best Bet) Orange Park Dog track parking lot at 295 and 17. Call or text Steve at 904-65four - 02two one