Easily hydrate with on-the-go 5155 Low-Profile Hydration Pack. It holds 2 liters to instantly access water from anywhere. Safe, clean hydration is possible with the antimicrobial bite valve and cover that protects against contaminants. Water remains cool in the heat with insulated pack and tube. Filling the bladder is simple and painless with the wide, dual-cap opening that prevents dreaded spills. High-quality thermoplastic is durable and does not have that unfortunate plastic taste or smell. You can wear the pack on your shoulders for hours thanks to the lightweight material. Durable, 600D rip-stop polyester creates a water-resistance and provides longevity. Hook-and-loop shoulder straps safely detach and avoid snagging when removing pack. Zippered closure keeps dirt and debris out. Top handle provides quick transport and hanging storage. Hydration pack is compatible with the Chill-Its 5159 Hydration Cleaning Kit (not included).