Unisex Adjustable Lower Back Brace Lumbar Support Pain Relief Waist Straps Belt with Pulley System for Sciatica Spinal Stenosis Scoliosis or Herniated Disc Specification: Material:    Neoprene.  Color:    Black.  Size:    S, M, L.  Suitable waist:    100-115cm / 39.37-45.28inch.     Features: 1. Support: Along the two side of spine, do not have positive contact with the vertebrae, focus on protecting the vertebrae.  2. Muscle Strain Relief: 2 nylon bars support the lumbar muscle in the waist to relieve strain and soreness.  3. Pulley System: Adjust the back support to the exact position and pressure for your needs.  4. Designed to allow natural movement while providing comfortable support.  5. Detachable, Washable, Breathable, non-Neoprene, non-Elastic knit fabric.     Mainly suitable for the following groups: Sciatica.  Scoliosis.  Herniated Disc.  Spinal Stenosis.  Lumbar muscle strain.  Lumbar spondylolisthesis.  Other lumbar disease crowd.  Especially acute lumbar disc herniation and acute lumbar musle sprain patients.     Package Included: 1 x Back support