With reinforced criss-cross bands to firmly support your back, this posture corrector helps you stand and sit straighter, taller ... comfortably easing back strain and pain. Discreet style features hook-and-loop band closure and shoulder straps for a custom fit. Specify size (measure around ribcage below bust line; garment should fit snugly): small/med (fits 30"-36") or large/X-large (fits 38"-44"). 55% nylon/30% polyester/15% spandex. Hand wash. Imported.