Material: cotton cloth Size: S: suit for chest circumference 71-81cm 27.9-31.9inch for weight 40-55KG M:suit for chest circumference 81-91cm 31.9-35.8inch for weight 55-70KG L: suit for chest circumference 91-101cm 35.8-39.8inch for weight 70-80KG XL : suit for chest circumference 101-111cm 39.8-43.7inch for weight 80-90KG Features: 1. Memory keels 2. pulley waist belt 3. T shape back brace 4. Breathable mesh cloth 5. Anti-tight pad 6. Double Waist protection 7. Washable Package include: 1Pcs Posture Corrector Back Braces About the product: Posture Correct - Our posture corrector is made with humanized design, give you the proper compression to you back and waist which is so helpful to prevent humpback or posture correction, helping you stand taller and straighter. Suitable For All Genders - The whole family can fit this posture corrector that is fully adjustable and designed to fit all genders. Body shaping-This back brace also can be used to shape your body freely according to your own conditions, which makes you look more slim, long time use even can lose your fat of abdomen, it is light weight and thin, Invisible can be worn as underwear. Made of breathable cotton fabric, 360 degree soft bendable support bar, with good plasticity, perfect fit, easy to wear and washable. design-with humanized backpack design, comprehensively correct and protect your spine, does not affect chest and abdominal breathing, no limiting to the motion of the shoulder and hands.design-with humanized backpack design, comprehensively correct and protect your spine, does not affect chest and abdominal breathing, no limiting to the motion of the shoulder and hands. Made of breathable cotton fabric, 360 degree soft bendable support bar, with good plasticity, perfect fit, easy to wear and washable. Body shaping-This back brace also can be used to shape your body freely according to your own conditions, which makes you look more slim, long time use even can lose your fat of abdomen, it is light weight and thin, Invisible can be worn as underwear. Suitable For All Genders - The whole family can fit this posture corrector that is fully adjustable and designed to fit all genders. Posture Correct - Our posture corrector is made with humanized design, give you the proper compression to you back and waist which is so helpful to prevent humpback or posture correction, helping you stand taller and straighter.