Design & Cooler: Cooler includes 3L Fusion Group Reservoir with Tru(R) Zip Waterproof Zipper Reservoir conveniently stows behind the zippered back panel for easy storage Hose with spigot is accessible from the exterior of the pack through the flow port Roll-top closure allows for single-handed access while providing greater durability and thermal efficiency than a zipper Built-in carry handles and removable padded shoulder strap offer versatile carry options Trap door separates dry items from ice and provides a secondary layer of insulation Stretch pocket for a bottle opener and other essential items Capable of fitting 16 cans with 12 lbs. of ice and a full reservoir Holds 22 lbs. of only ice