Features1The shoulder pads are made of lightweight, breathable and hygienic antibacterial EVA, which is comfortable to wear. 2It can be worn under clothes and attached to the skin, will not fall under clothes, is suitable for daily use. 3The back material is made of PE, without large area cloth material, lighter and more breathable with a better effect. 4Enhanced back support to prevent hunchback, spine curvature and relieve spine, neck, back pain. 5The adjustable double stretch straps in the underarm area are ergonomically designed to ensure a comfortable fit.SpecificationItem Type: Posture CorrectorMaterial: PE & EVASize Chart: Size Under BustSuitable Height S 50-60cm / 19.7-23.6in 100-125cm / 39.3-49.2in M 55-65cm / 21.7-25.6in 120-140cm / 47.2-55.1in L 60-70cm / 23.6-27.6in 140-160cm / 55.1-63.0inFunction: Make you look confident, strengthen your body, and correct your sitting posture to prevent myopia.Package List1 x Posture Corrector