Thigh and Wrist Cuff Set
Get 2 sets of soft, sturdy neoprene cuffs. One pair fits around the tops of the thighs and the other around the wrists. They can then be clipped together in any combination (maybe vulnerable, maybe secured, maybe contorted....).
Both cuff sets are easily adjustable with simple straps and user friendly ladder-lock closures, just pull the straps to tighten and adjust; you can have your lover bound up in seconds, and freed just as quickly, thanks to the hardy Velcro construction that allows the cuffs to fit just about any size. All of that convenience allows for quicker escape in case of emergencies!