Heel circumference size: 36cm~39cm FILMISTA ANKLE This is a Zamst ankle support for the left ankle. It is designed to not restrict plantarflexion and dorsiflexion of the ankle. Urethane film is optimally placed based on taping theory to suppress inversion movement. Two types of urethane film with different elasticity are adhered together. This achieves thinness, strength, and fit. *F.S. = Film Stability A non-slip material is used on the skin side. It adheres to the skin even during intense movement and is designed to be difficult to shift. Please choose according to your heel circumference. Measure the heel circumference by measuring the circumference passing through the heel and the front of the ankle. If your measurement falls between two sizes, choose the larger size. 3 #Zamst #Ankle #Support