The ASO Speed Lacer Ankle Brace is recommended for people who have ankle sprains, strains or ankle instabilities. The ASO Speed Lacer Ankle Stabiliser brace features proven technology with its patented figure of 8 strapping system in a very low profile design making it the ideal ankle brace for athletes or people who do not want any bulky materials inside their footwear. The Speed Lacing design ensure this brace is quick and easy to apply and particularly recommended for anyone who has limited hand dexterity. The stabilising straps are angled to contour above the ankle for increased support and comfort. To work out the correct size required please measure the circumference of your ankle from under the heel to around the front of the foot and choose from the following ranges - Extra Small 25.5 - 27.9 cm / Small 28 - 30.5 cm / Medium 30.6 - 33 cm / Large 33.1 - 35.6 cm / Extra Large 35.7 - 38.1 cm.