Let the #1 brand in physical device security remove your worries about bag theft. Secure your backpack by clicking the hammerhead zipper pulls into the patent-pending SecureTrek Lock Base to keep the contents inside your backpack safe. Use a Kensington Portable Laptop Lock to secure to a fixed object or add a TSA-approved lock when flying. Your laptop and tablet stow in padded compartments and are shielded by an anti-puncture zipper. There's ample space to organize all your stuff, a padded back for extra comfort, and a unique pass-thru lets you strap it to a wheeled bag.