Killik H20 16 Liter Hydration Pack - Lightweight streamlined pack for shorter trips when hydration is critical. Features: Lightweight, super-strong, water-resistant polyester fabric YKK zippers with easy-grab pullers Quality Duraflex hardware and buckles Nylon webbing straps Reinforced seams and stress points Padded jersey-lined backpanel Lightweight low-profile shoulder straps with adjustable chest strap Built-in safety whistle buckle in chest strap Removeable, adjustable webbing waist belt Compressible front “stuff it” pocket for quick access to external gear Fleece lined front zippered pocket 9+ Pockets! 3L / 100 oz Hydrapak hydration bladder included