An improved disposable double-loop restraining device is tamper resistant, utilizes a non-keyed lock and include a core material designed to resist friction cutting. A coded removable tab is provided for positively tracking a detainee with an arrest record. The device may be folded allowing...http://www.google.es/patents/US5802888?utm_source=gb-gplus-sharePatente US5802888 - Flexible strap restraining device
