The Norstar Power Strides are designed to be cut to the size you require. Supplied Snall 2-5, Medium 6-8, Large 9-13. Trim to fit. Template included. Voted best value magnetic insoles from a panel on "What Doctors Don't Tell You".
Size : Medium - up to 18" (measure round the knee) Large - from 18" - 24" (measure round the knee) Please note all measurements are approximate. Sometimes with knee problems it is difficult to tell exactly where the damage originates.