Flat Knit an advanced horizontal knitting technique, allows for customized stitching to achieve 3D shaping of the fabric, providing optimum fit. Contours to your ankle area, providing optimum support. Medical Application: Recommended use for minor to moderate ankle sprains and strains. Design Theory: Breathable, multi-directional stretch allows full range of motion while maintaining high level support. Ankle Sprain: Medical Definition - The stretching or tearing of ligaments on the outside or lateral aspect of the ankle. Causes: The sudden turn of the foot, typically down and inward, may cause an ankle sprain. This often occurs when weight is applied to a foot that is on an uneven surface and foot "rolls in", or experiences an "inversion". Symptoms: Tenderness, swelling. Inability to put weight on ankle because of pain. Recommended Treatment: R.I.C.E. - Rest, Ice, Compression, Elevation. Reduce activity to promote healing. Apply Ice for 10-15 minutes after each workout to reduce inflammation and pain. Be sure to get an evaluation by a medical professional and seek professional guidance on a proper rehabilitation program. Various exercises and stretching may help strengthen the injured ankle. A brace will stabilize the ankle and may help prevent further injury. SPECIFICATIONS Sizes: Measurement based on US shoe size Small: Mens (5-7), Womens (5-7.5) Medium: Mens (7.5-10), Womens (8-10.5) Large: Mens (10.5-12.5), Womens (11-13) X-Large: Mens (13+), Womens (13.5+)