Ensure all-day hydration with the professionally-engineered MSP-3 Expandable Hydration Pack by Voodoo Tactical (model no. 15-7491). The versatile pack has been expertly designed for law enforcement professionals, members of the military and hikers alike. The rugged nylon construction keeps the pack light while guaranteeing effortless cleaning and maintenance. Designed for comfort, the padded, ergonomically-contoured shoulder harness system, adjustable belt and mesh backing serve to balance the pack's weight load and maintain breathability during extended wear. A special compartment houses a deluxe bladder with a neoprene hose cover and ambidextrous exit ports. Aside from the bladder compartment, the spacious storage area includes mesh dividers and a key hook for plenty of organization opportunities. Self-repairing nylon zippers and an expandable partition add three-inches of volume to the main compartment.