Medium * Measurement 6 below knee: 17.75 - 20.75 * Measurement 6 above knee: 12.5 - 15.5 * White cotton sateen on 3/8 thick foam nylon tricot lined * One each medial and lateral stays and two contoured posterior stays are removable * Alternating loop-lock straps close with hook and loop * Two adhesive foam strips and popliteal pad included * HCPCS Suggested Code: L1830