Small: Men 4 - 7 Women 5 - 8 * The Xp Walker Has A Lightweight Durable Semi-rigid Shell That Helps Support The Limb While Providing Full-shell Protection * Lining The Shell Are Overlapping Duplex Aircells Providing Intermittent Pneumatic Compression For Efficient Edema Reduction And Callus Formation * These Aircells Can Be Custom-inflated For A Total Contact Fit * Includes Two Socks And Hand Bulb - Can Be Used With Brace - Loktm System * Hcpcs Suggested Code: L4360