Relieve Back Pain and Improve Posture - Reset your spine and reduce pain caused by poor alignment. Don"t worry if you feel mild discomfort. That means the Posture Modification Belt is working and it"s adjusting your spine the way it should AMAZING SUPPORT - Lumbar traction reduces muscle fatigue and swelling, increases blood circulation, and helps you provide immediate and lasting relief from herniated discs, sciatica and other back discomforts. Versatile - Can be used during activities, or during rest and relaxation, such as walking, sitting, lying down, gardening, golfing, working, driving, etc. Lightweight and comfortable. ONE SIZE FOR 29-49 WAISTS - Our Waist Support Belts come with an extension belt that can be used according to individual needs to support waist sizes up to 49".