doeplex muscle roller massage stick for athletes, 20 inch body massager soreness, cramping pain and tightness relief helps legs and back recovery tools, removable modules (2019 removable modules) doeplex massaging yourself relaxes and drains your muscles. so it promotes their recovery. that, in turn, makes it easier for you to keep up your training and thus improve even faster! easier for beginners to use than a foam roller, the self-massaging stick with its thick modules allows you give the muscle groups of your whole body a deep massage, and to target the trigger points.