When youre traveling for business, the Secure Trek 17 Laptop Overnight Backpack not only protects your laptop from damage, it offers an anti-theft security system. Safeguard your backpacks contents by clicking the hammerhead zipper pulls into the patent-pending Secure Trek Lock Base, then add a Kensington Lock to secure the backpack to a fixed object. Or you can use a TSA-approved laptop lock when flying. Protected by durable Poly Twill material, your laptop & tablet stow in padded compartments & are shielded by an anti-puncture zipper. Theres ample space to organize all your stuff, including clothing for an overnight trip, a padded back for extra comfort, & a unique pass-thru that lets you strap it to a wheeled bag.