Victorinox  Travel Sentry Approved Loop Lock,Black,One Size Plastic Travel sentry approved combination lock secures belongings while in transit and allows u.s. airport security to open the lock without destroying it and relock it after inspection Convienient loop cable system is sized to fit through lockable zipper sliders, cable measures 17" long Three-digit combination can be reset as needed 2.5 Inch 1 Inch