Jet Packs are made of 3mm 100% Italian wool felt body with a durable nylon canvas covering. The felt adds shape and protection for a 15" laptop computer. The origami-inspired opening is unique unto itself. Boosting a pull through strap allowing you to wear it as a backpack or slid it into a crossbody bag for when you're on the go. Jet Packs offer you clean lines, durablity and versatility all in one backpack. Chrome buckle option, leather outside side pocket and one side entry zipper. The main zipper is on your back, so no one can sneak up behind you and get into your bag. Unzip main zipper and the bag unfolds to give you full access to the inside.