Three-dimensional integration, physical posture principle, the use of triangular stability and three-dimensional force, balance in the back to form a number of solid triangle, the force surface stretching bone gap reproduce the normal physiological curve of the spine Shoulder belt adjustment, waist, shoulder can be freely adjusted, Back mesh material, comfortable and breathable fabric, refreshing, breathable and light. Perforated fabric, comfortable and breathable, refreshing and thin can be adjusted at will to tighten, fit the body Adjustable shoulder straps, fixed square buckle support square buckle position just design, at the end of the shoulder straps will not have an extra part, will not cause uncomfortable back feeling Gender: Men's, Women's. Material: Neoprene. size:S,M,L,XL,2XL,3XL Color: black,gray Easy to Wear, Adjustable, Back Support, Breathable. Package Includes: 1 x Posture Corrector Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Easy to adjust, stable and not easy to loosen.Easy to adjust, stable and not easy to loosen. Adjustable shoulder straps, fixed square buckle support square buckle position just design, at the end of the shoulder straps will not have an extra part, will not cause uncomfortable back feeling. can be adjusted at will to tighten, fit the body. Back mesh material, comfortable and breathable fabric, refreshing, breathable and light. Perforated fabric, comfortable and breathable, refreshing and thin. Shoulder belt adjustment, waist, shoulder can be freely adjusted,. Three-dimensional integration, physical posture principle, the use of triangular stability and three-dimensional force, balance in the back to form a number of solid triangle, the force surface stretching bone gap reproduce the normal physiological curve of the spine.