Size: Large Men 10-13 Women 11-15 Size: Medium Men 7-10 Women 8-11 Size: Large Men 10-12 Women 11-15 Size: X-Large Men 13+ Women 15+ The Pneumatic WalkerTM offers enhanced stability mobility and edema control. Air bladder inside Anatomically designed in three sizes. HCPCS Suggested Code: L4360