Set out on a picnicking adventure keeping your food and beverages cold on the go stashed in the REI Backpack Cooler. 2 insulated compartments with removable waterproof, wipe-clean linings keep perishable items chilled materials are 100 free of PVC. Trail-pack technology guides the design-padded, adjustable shoulder straps, sternum strap and stowable nylon waistbelt ensure a comfortable load. Stowable lash straps let you bring along a picnic blanket. Mesh side pockets hold bottled beverages. Bag is padded on all sides to protect contents.