Carry your cooler on your back and free your hands to help you scramble. A seriously rugged semi-soft backpack cooler, the Hopper BackFlip is designed to hold up to 20 355ml cans and enough ice to keep your beverages cold. The tough Dryhide shell and zipper tech is borrowed from HazMat protective gear, so it's not likely to leak all over your back or your car's backseat. Yeti DryHide nylon fabric is puncture-resistant. Antimicrobial liner resists mildew and mould. Welded seams and a Hydrolok waterproof zipper ensure it's leakproof and airtight. ColdCell insulation for outstanding insulation. Padded shoulder straps, removable sternum strap and hipbelt ensure it stays comfortable and secure on your back. Lash points on carry straps. Heavy-duty EVA foam so it stands on its own.