Unisex Back Waist Posture Corrector Adjustable Adult Correction Belt Waist Trainer Shoulder Lumbar Brace Spine Support Belt VestPackage included:1 x back corrector belt Size:S(Waist):69-81cm/27''-32''M(Waist):82-91cm/32.1''-36''L(Waist):92-101cm/36.1''-40''XL(Waist):102-112cm/40.1''-44''Features:(1) the use of comfortable, breathable cotton material, buckles, made of adhesive tape;(2) Special-eight open design is easy to adjust the tightness;(3) easy to wear, comfortable, good air permeability;(4) effective to medial fractures.How to use:Pull shoulder straps over shoulders making sure that the elastic cloth are closest to your body.Stretch waist belt around torso and fasten.Adjust position and snugness as needed. Shoulder straps should pull back slightly on shoulder area.If needed pull waist belt down slightly to increase shoulder pressure.