Designed especially for the female figure, this lightweight back support stabilizes the lumbar and abdominal regions to support your back and ease pain. 7" deep panel tapers to 4.5" for form-fitting support. Ribbed elastic design allows air to flow, keeping you cool and comfortable. Adjustable closure. Polyester/nylon/spandex. See size chart. Measure around widest part of hips: Medium (33"-36"), Large (37"-40"), XL (41"-44"), 2XL (45"-48").