Description The Ankle and Foot Stabilizing Brace – Orthotic AFO Rigid Stabilizer for Protection & Sprain Support. For Weak Ankles and Use During Sports. By Alpha Medical HCPC L1971/1906 is a low-profile, lightweight device used for acute or chronic ankle sprains. With rigid medial and lateral uprights and an easy front closure system the Alpha Medical AFO w/ Ankle Joint offers more stability than regular ankle supports. Size Guide: Use shoe size to determine correct size Small: Men’s Shoe Size up to 8 / Women’s Shoe Size up to 9 Medium: Men’s Shoe Size 8.5 to 12 / Women’s Shoe Size 9.5 to 13 Large: Men’s Shoe Size 12 and up / Women’s Shoe Size 13.5 and up   Item#: 3410