Multi-purpose use:On the basis of the original lumbar traction stretching, the advantage of a memory cotton cushion is added to avoid the waist plate being too hard to hurt the lumbar vertebrae. In daily life, it can be used as a cushion for office chair & car cushion and has three levels of height adjustment. | Improve lumbar health:Multi-Level Lumbar Support Stretcher Spinal, back massager, shoulder massager and back massager for bed,back massager accupressure,back massager chair,back massager car,Lower Back Pain Relief Treatment Stretcher ，Chronic Lumbar Support ，Herniated Disc ，Sciatica Nerve，Spinal Stenosis ，Posture Corrector | Comfortable memory foam:Is made of comfortable memory foam and is encased in a removable, breathable, and washable black 3D ventilated mesh cover, which wicks away sweat and moisture and keeps you cool and comfortable throughout the day. The memory foam we use is so pure that it retains its shape and density while keeping you comfortable and protecte | Relieve muscle pain and stress：With our ergonomically designed self massager, relieve chronic back pain and ease away stress. | If you are a yoga enthusiast, it is a good lower waist stretcher, which can open the cervical intervertebral space and strengthen the lumbar muscle traction and reduce lumbar muscle strain.