The AirSport Ankle Brace incorporates clinically proven Air-Stirrup Ankle Brace features, such as a semi-rigid shell and aircells, to provide comfort and support. Aircast Airsport Ankle Brace additional compression and stabilization is provided by ATF (anterior talofibular) cross strap and integral forefoot and shin wraps. The unique step-in design (toes first inserted into the back of the brace) and automatic heel adjustment make the AirSport extremely fast and easy to put on, just: Step In, Strap Up, And Go. Foam-filled aircell that cushions and supports the ankle. Semi-rigid encased shell offers proven Air-Stirrup support. Coated fabric for durability. ATF cross-strap for ankle stabilization. Integral forefoot and shin wraps for support. Automatic heel width adjustment for easy application. *Note: All pictures shown are for illustration purposes only. Actual product may vary due to product enhancement.