The compression sleeve is designed to actively support muscles, increase power production and improve sports performance. It may also relieve symptoms of tennis elbow, golfer's elbow, tendinitis, and overuse conditions. 95% Polyester, 5% Spandex Compression fit and stretch fabric for freedom of movement Breathable, moisture-wicking material to help keep you dry and comfortable Provides targeted elbow relief and stability One sleeve per pack Full-dye sublimated cut and sewn sleeve