Secure your luggage and equipment cases when traveling—these locks allow TSA personnel to open your bags without damaging the lock. With more clearance than other locks, they let you thread the shackle or cable of the lock through multiple zipper heads or larger hasps. You can set your own combination and change it at any time.

Standard-shackle locks have a metal body and solid shackle, so they're stronger and hold up better against break-in attempts than the flexible-shackle padlocks. Aluminum body locks are smaller and less likely to snag than those with zinc bodies. They have an indicator that changes from green to red to alert you if the lock was opened. Zinc body locks have a larger shackle clearance.

Flexible-shackle locks maneuver through multiple points or bend around corners, so you don't need multiple locks. However, the cable is thinner than a rigid shackle, making it easier to cut. These locks have a plastic body that resists corrosion and won’t scratch or damage nearby surfaces. A name tag on one side means these locks double as a luggage ID.