With daily wear, BaX-U Posture Support can reduce postural degeneration and health decay. Constructed of a silkysoft material with stretch straps featuring hook-and-loop adjustability, this posture support is sleek enough to be undetectable beneath clothing. Wear it up to 10 hours as you go about your day, all the while gently and comfortably improving your posture and back strength, as well as reducing back and neck pain. 96% Polyester, 4% Spandex. Hand wash. Nude. USA. Specify by chest size: S(28"-34"), M(36"-42"), L(44"-50").