Scott Specialties 16in Knee Immobilizer, Medium

White cotton sateen laminated on 3/8in foam Nylon tricot lined for comfort and durability. 1 removable pre-shaped lateral and medial stay and 2 posterior stays for rigid immobilization. Alternating VELCRO Brand in loop-lock fashion gives desired adjustment. Comes with 2 adhesive foam strips and popliteal pad for perfect fit. To size, measure the circumference of the leg 6in above and 6in below the knee. Medium is 17 1/2in-20 3/4in above and 12 1/2in-15 1/2in below.