• polyester
• Insulated cooler backpack: 17x13x17 inches; 1.72 Pounds, the refrigerated compartment can store 16 cans of beer. If ice cubes are placed, the amount of beer will vary with the number of ice cubes. Room temperature compartment capacity is 18 Cans. Picnic backpack is only suitable for standing.
• Beach Backpack Cooler function: Besides used as excellent lunch cooler bag, it is also a perfect lightweight gear for hiking backpack, camping backpack, fishing bag, hunting backpack, travel backpack, trail, cycling, overnight stay and other outdoor activities. Suitable for both men and women.
• 2-In-1 Dual compartment small cooler backpack: Main compartment keeps contents cold and prevents leaks with heat-welded seams
• Lunch backpack light yet durable: Made of waterproof, durable fabric, best lightweight backpack with ice packs cooler.
• Beach cooler durable & scratch-proof: The backpack coolers are made of heavy duty nylon which will not rip, tear or scratch, but lightweight to carry. Padded and fully adjustable shoulders straps offer the maximum comfort and support.