These backpacks are made from the same canvas we use in our tents so they are water and flame resistant and come in two sizes. The “Large Backpack” is 11” wide, 8” deep, and 22” long. The “Small Backpack” is 11” wide, 7-1/2” deep, and 15” long and has a front pocket. Both have additional interior pockets and adjustable straps for fitting to your own body frame. We suggest adding leather or any other suitable cover over the shoulder straps.