Come and see our amazing products. Oxford cloth.High-Density insulation material and leak-proof liner inside of the insulated backpacks work together to make sure anti-leaking and keep food hot/ cold for 16 hours.17.7"" x 13.0"" x 7.5"" / 45cm x 33cm x 19cm (L x W x H), Weight: 1 pounds / 470g, can hold up to 30 cans(330ml), own enough space for all your necessities. Made of waterproof, durable fabric, best lightweight backpack with cooler for work, picnics, road/ beach trips, hiking, camping, cycling, a perfect gift for men women.The stylish design of our insulated cooler backpack make it also can be used as a lunch backpack or daily pack. Perfect for lunches, picnics, work or travel. Pls confirm with us about the packing info, stock color and exact production time before placing your order.