The Rigid Stirrup Gel & Air Ankle Brace offers two compartments, one of gel, and one of air, which conform to the ankle, helping to ensure the patient receives a more comfortable fit.This brace can be used during athletic events with the rigid plastic shell offering the ankle even more protection.Brace Height:Small: 8.5''.Trainer: 9''.Regular: 9.5''Product photo may not exactly match the product offered for sale. Please refer to the product description