Port Authority 18-Can Backpack Cooler BG501This is a cooler that packs everything for an adventure and so much more! Whether you're camping or going on a picnic, this unique backpack has the capacity for 18 cans in the bottom cooler compartment and dry storage space in the upper roll top compartment. A front slip pocket and buckles add additional storage and carrying options. 600 denier polyester canvas Heat sealed, water resistant PEVA lining in bottom cooler storage Dry storage top