For extra security the StrapSafe 100 cannot be loosened once locked because, unlike other luggage straps, it uses patented Baggage Constrictor TM technology. The Travel Sentry® Approved 3-dial combination lock can be safely opened and relocked by TSA (Transport Security Administration) luggage inspectors. An indicator window shows when the lock has been opened by TSA inspectors. Width 5cm. Length 97-190cm. Weight 150g.