The SecureTrek locking base allows the tongues of the zipper sliders to be clipped in, to prevent attempted theft and unauthorised access to the bag, the Kensington laptop lock (sold separately) allows the bag to be attached to a stationary object The zips of the device compartments are puncture-resistant with a sharp object A locking loop ideal as a travel lock TSA-certified for baggage handling at the airport, the dimensions meet airline standards for carrying hand luggage in the upper compartments padded device compartments hold laptops up to 17" and a tablet 10" work pocket allows you to organize all chargers, pens, business cards, keys, etc.