FITS MOST BACKPACKS: Lightweight and low profile - the updated Slide Seal Top features a universal pack hanger designed to work with clips, hooks, and loops from a variety of name brand hydration packs. SLIM PROFILE: The hydration bladder has a 3D bottom, fixed Shape-Loc baffles and side exit port that increases stabilization during high-impact activities. NEW HIGH-FLOW BITE VALVE: The lightweight Comet bite valve self-seals after each sip and comes with a thumb-activated shut off - the included tube magnet clip makes hose attachment quick and easy. EASY TO CARRY, FILL & CLEAN: The durable and flexible handle simplifies filling and carrying, and in internal drying tab makes it easy to reverse for cleaning. LIFETIME WARRANTY: Beyond Lifetime Guarantee covers all reservoirs from manufacturing defects in materials and workmanship for the lifetime of the product.