This first-ever, transforming massage roller adapts for targeted massage. You adapt it to fit your massage by rearranging the nine Adaptive Massage Rings. There are three sizes of these interchangeable rings, providing ultra-diverse massage options, from superficial to deep tissue compression. Each ring has variable patterns of raised ridges that promote circulation and release trigger points. Simply slide the Rings on and off the roller to create limitless massage configurations. DESIGN: Rotating the ring one-quarter turn will vary the raised ridge pattern Massage Rings use stabilizing grooves to slide on and off the Roller core The Roller has Retainer Caps on both ends that easily screw on and off to rearrange the Massage Rings Revolve Rollers include nine interchangeable Adaptive Massage Rings, available in varied sets of High-, Mid- and Low-profile sizes