These are military issue duffel bags. These bags measure roughly 12 x 12 x 30 inches but they do conform to their contents since they're not a rigid material. These duffels work great for camping or general storage or travel bags. They are perfect for holding 2 sleeping bags. The body is made from Cordura nylon and is very durable. The top has a quad fold grommet and loop system that can be locked with a padlock. The nylon ones have the double shoulder strap system as shown in the photos but I have cotton duck canvas duffles as well that just have the typical single shoulder strap. The main photo is an internet photo since I couldn’t get my pictures to transfer in the correct orientation. Army USMC