Stay upright with a Unisex Adjustable Back and Shoulder Support Vest Comes in 4 x sizes: S, M, L or XL  Supporting design helps train the posture of back and shoulders Made from a sturdy neoprene and steel  Small: 70cm-85cm  Medium: 80cm-95cm Large: 90cm-105cm  X-Large: 100cm-115cm  Perfect gift for those who wish to train their…