This is the original style serola belt. The Serola Sacroiliac Belt is designed to compress and support the sacroiliac joints, thereby relieving stress and instability. Due to its tacky nature it grips so well that it will not move. Just as importantly, it is not so tight that it is restrictive. Excess or insufficient motion can adversely affect the entire musculoskeletal system. The Serola Sacroiliac Belt, by providing the correct balance of resistance and resilience, re-establishes the joints normal motion. Because of the stability the Serola Sacroiliac Belt gives to the base of your spine, strength is increased throughout your back, hips, and legs, and your chances of injury are lessened considerably during work or play. This listing is for the Original Serola Sacroiliac belt. 3" wide SI belt supports the sacroiliac joints relieving stress and instability. breathable, moisture-wicking, and hypoallergenic. See return policy. For health and hygiene reasons this item is not returnable once worn.