SecureTrek Lock Base lets you click in hammerhead zipper pulls to deter theft attempts and unauthorized access into your bag Kensington Portable Laptop Lock (sold separately) secures bag to a fixed object Anti-puncture zipper for device compartment resists intrusion by sharp object Lock Loop ideal for a TSA-approved travel lock when checking bag at airport Padded device compartments hold up to 15.6laptop and 10tablet Workstation pocket organizes all your chargers, pens, business cards, keys and more Whether youre on your commute or walking across the corporate campus, the SecureTrek 15.6Laptop Carrying Case 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 it to a fixed object. Or you can use a TSA-approved luggage lock when flying. Protected by durable Poly Twill material, your laptop and table