This versatile insulated leak-proof backpack cooler boasts high-density insulation materials paired with an internal leak-proof liner, ensuring that your food stays hot or cold for up to 16-hours. Its spacious design can hold up to 35 cans of beverages, complemented by multiple compartments for organized storage. Featuring an ergonomic padded back and adjustable, breathable S-shaped shoulder straps, this backpack reduces fatigue during long trips. Complete with a labor-saving handle, adjustable chest buckle (doubling as a survival whistle for emergencies), and unique functional designs like top condiment bottle holders, stainless steel bottle opener on the shoulder strap, webbing holes for hanging keys and water bottles, and a stretch cord for sunglasses, this backpack is the perfect lightweight gear for both men and women, ideal for hiking, camping, and picnics. Color: Black.