Muscle Lever Mufti-functional Fitness Device and Body Massager Muscle Lever is a unique self massage device like no other. The amount of pressure that generate with very little effort, to any part of your body set it apart from all other devices. One of the major advantages to the muscle lever is how the user can position there body and roll the device along your lower back with enough pressure to give a lumbar depression to relieve lower back pain from sitting to long. The Muscle Lever is very durable with a 1 year guarantee. Is very easy to store