Killik H2O 3 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