Elastic, cotton-rayon blend fabric provides firm support; helps improve circulation to promote healing. Absorbs perspiration for all day wearing comfort. Figure-8 design conforms to the anatomy around the ankle joint. Health Concern: Bone & Joint Health Encircles the ankle like a bandage but without the bulk. Fits easily inside shoes. Measure around the smallest part of the ankle. Available Sizes: Small (7-8 Inches), Medium (8.25-9 Inches), Large (9.25-10 Inches), X-Large (10.25-11 Inches), and V-Large (11.25-12 Inches).