AliMed ProgressiveAnkle Contracture Splint adjusts from 10 dorsiflexion to 10 plantar flexion. Ventilated to stay cool and comfortable. Lined with removable, washable AliFleece high-pile liner. Padded straps help avoid any pressure points. Durable plastic shell is tough and easy to clean. Heel area is blown out to minimize heel pressure. Angle adjusts with removable screws. Monitor progress with nylon, nine-position adjuster bar. Fits left or right foot.Replacement AliFleece Liner comes with mesh laundry bag.Sizing: Approximately based on shoe size.Medium fits Women's 4 to 10, Men's 6 to 8-1/2 Large fits Women's 10-1/2 , Men's 9 Specify size when ordering.Adjusts from 10 dorsiflexion to 10 plantar flexion Ventilated to stay cool and comfortable Lined with removable, washbable AliFleece high-pile liner