When youre traveling for business the securetrek 17 laptop overnight roller not only protects your laptop from damage it offers an anti theft security system safeguard your bags contents by clicking the hammerhead zipper pulls into the patent pending securetrek lock base then add a kensington lock to secure the backpack to a fixed object or you can use a tsa approved lock when flying protected by durable poly twill material your laptop and tablet stow in padded compartments and are shield