Easily hydrate on-the-go with 5156 Low-Profile Hydration Pack with Storage. It carries 3 liters of instantly accessible water. Clean hydration is possible with bite valve and cover that protects against contaminants. Water remains cool with insulated pack and tube. Filling the bladder is simple with the dual-cap opening that prevents spills. High-quality thermoplastic is durable and doesn't have plastic taste or smell. Vented straps increase airflow. Storm drain keeps pack dry. You can wear the pack for hours thanks to the lightweight material. Durable, polyester creates a water-resistance and provides longevity. Reflective accents provide enhanced visibility. Additional storage with headphone port, six D-rings and daisy-chain webbing. Hook-and-loop shoulder straps safely detach and avoid snagging when removing pack. Top handle provides easy transport and hanging storage. Hydration pack is compatible with the Chill-Its 5159 Hydration Cleaning Kit (not included).Easily hydrate on-the-go with 5156 Low-Profile Hydration Pack with Storage. It carries 3 liters of instantly accessible water. Clean hydration is possible with bite valve and cover that protects against contaminants. Water remains cool with insulated pack and tube. Filling the bladder is simple with the dual-cap opening that prevents spills. High-quality thermoplastic is durable and doesn't have plastic taste or smell. Vented straps increase airflow. Storm drain keeps pack dry. You can wear the pack for hours thanks to the lightweight material. Durable, polyester creates a water-resistance and provides longevity. Reflective accents provide enhanced visibility. Additional storage with headphone port, six D-rings and daisy-chain webbing. Hook-and-loop shoulder straps safely detach and avoid snagging when removing pack. Top handle provides easy transport and hanging storage. Hydration pack is compatible with the Chill-Its 5159 Hydration Cleaning Kit (not included).