Whether on your commute or heading to an off-site meeting, the SecureTrek 15.6” Laptop Backpack not only protects your laptop from damage, it offers an anti-theft security system. Safeguard your backpack’s 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 luggage lock when flying. Protected by durable Poly Twill material, 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. SecureTrek Lock Base lets you click in hammerhead zipper pulls to help prevent theft attempts and unauthorized access into your backpack. Kensington Portable Laptop Lock (sold separately) secures bag to a fixed object. Anti-puncture zipper on the device compartment resists intrusion by sharp object. Lock Loop ideal for a TSA-approved travel lock when checking backpack at airport. Padded device compartments hold up to 15.6” laptop and 10” tablet. Workstation pocket organizes all your chargers, pens, business cards, keys and more. Wheeled luggage pass-thru conveniently straps to an extended handle. Padded back provides a more comfortable carry, especially when backpack is full. Ample space for files and personal items. 840D Poly Twill outer material. 10-year limited warranty. 10-Year Limited Warranty. Built to last, each SecureTrek bag is extremely durable and designed to stand the test of time, so if something breaks we will fix it or replace it.