The Vulkan Elbow Support Advanced Elastic provides comfort for swollen or tender elbows as a result of sprains and strains. Firm support for prevention of further pain and discomfort. Ideal for racket sports and golfers. Ideal for short term use to control swelling. Available in 3 sizes. To decide which size is right for you measure around the arm at the elbow: Small - Below 23.5cm, Medium - 23.5 to 26cm, Large - 26 to 28cm.