Up to 1.5" of closed cell foam insulation. Keeps contents cold for up to 2 days when following RTIC's Cooling Tips. Welded seams and RTIC EZ Waterproof Zippers make it air- and watertight. Heavy-duty, coated exterior and waterproof, puncture-resistant interior. Leakproof design, welded seams, and a waterproof zipper allow this cooler to float in water. Heavy-duty, coated fabric is tear resistant. Removable, adjustable shoulder strap and built-in carrying handles. Exterior pocket (pocket is not waterproof). Wide mouth opening.