Behind the Back Strap On Bondage Set from Adam and Eve. Give your power play an edge with this luxurious kinky bondage set. Strong Velcro fasteners let you securely adjust the soft brocade collar and waist strap for a perfect fit. Along you spine three sets of rings let you attach matching cuffs waist mid back and upper back. Let you submissive movement a little or a lot while you indulge wild fantasies and behind the back games. 5 year warranty from Evolved Novelties. Measurements: Waist up to 39 inches. Back strap 20 inches from waist to collar