Gear up for your next hike with the Igloo Trek Cooler Backpack. Constructed with durable 600-denier ripstop polyester material, this backpack features a deep gusseted front pocket as well as a top zip pocket for ample storage space, while the built-in MaxCold insulation helps keep your food and drinks cold. The padded air-mesh shoulder straps allow comfortable carrying, and the antimicrobial and leak-resistant liner is easy to clean. Contains Lithium Battery/s No.