Shock absorber pad. Helps relieve lower back pain caused by strain. Adjustable Velcro straps for firm, customized fit. Support your active life. Helps relieve pain coming from the sacroiliac joint. Durable materials for firm support. Adjustable Velcro straps for customized fit. Fits discreetly under clothing. 1. Shock absorber pad helps stabilize pelvic tilt. 2. Firm tension elastic darts help support sacroiliac joint. 3. Adjustable straps for a custom fit. 4. Sturdy, breathable materials for firm support with comfort. Size: for men or women, this brace has been designed with adjustable strap closures in order to create a customized fit for most body types. To determine the correct size, measure around the hips, just below the waistline. Small = 30.0 - 35.0 in; medium = 35.0 - 41.0 in.; large = 41.0 - 46.0 in.; X-large = 46.0 - 52.0 in. Developed in collaboration with a panel of physicians, surgeons and medical specialists. Made in USA.