Proflex  Back Support Brace Medium in size. Model Number is 1650.  48% Polyester and 15% latex 30% nylon and 7% Poly-p.  This product contains latex which may cause an alergic reaction to those who are sensitive.  Black with velcro closures that help you to adjust the snugness of this once on. Pre-owned and in very good condition.  Measures about 40 inches in length with out stretching it any.