More info here SIZES 38L INCLUDES ITEM NO.AC-BC201. HARD FACTS/ Closed-foam insulation holds cool up to 8 hours Made with high-density NBR foam and thermoplastic polyurethane (TPU) shell Leak proof and impact resistant Detachable straps for backpacks/shoulder straps switch design Large inner compartment that can hold up to 20 cans with ice Attached bottle opener Nylon webbing on the sides and front bungee cords to attach extra accessories Adjustable mesh pockets on the side for bottles or drinks FUNCTIONAL, VERSATILE AND USER-FRIENDLY On the way to the beach, or to the camping site, you can keep your food and drinks ice cold for up to 8 hours with this smartly designed Thermo Cooler Bag.