Color: Gray QTY Per Sell: 1 Size: Medium Customizable, independent distal air cells: Integrated inflation system allows individualized fit; no hand bulb needed. nmarking, skid resistant rubber tread: Improves traction and durability SoftStrike technology: Absorbs and dissipates the energy during heel strike and reduce heel pain Low profile rocker sole: Enables normal walking gait; reduces forefoot angulations and knee hyperextension Trimmable and heat-moldable semi-rigid shell: Easily custom-fit for comfort Sleek, open-frame design: Provides ventilated protection and supports compliance Contours around the malleoli: Eliminates pressure for sustained comfort Three-strap system: Evenly disperses pressure and eliminates pooling of edema Intuitive, integrated inflation system: Permits quick and easy customization of each air cell Medium fits those who wear men's shoes size, 7 – 10, or women's shoes, size 8 – 11. Will work for either foot/leg