MARINE WAY STOW BACKPACK is not your average backpack cooler. It has a huge capacity, capable of carrying 30 cans of your favorite beverages with ice. The extra thick walls and waterproof zippers allow the content to be kept cold for days with proper use. Stow backpack comes with a reflective front zipper to allow for easy access to keys, permits, documents in the front pocket even in dark environments. It also has 2 mesh side pockets for extra storage, side handles for easy carrying, and carrier webbing for clip on cargo and built in bottle opener.