I size fit most... sleeva measures 5" at top, 19" long, 3 1/2" at wrist. This sleave also look great worn on the calf. There is 1 sleave in an order, one, typically a player wears one sleeve. The compression arm sleeves are made of tough Non-Woven Antibacterial 80% Polyester 20% Spandex material, yet have a second-skin feel.They are the most comfortable compression arm sleeves available in the industry. Sleaves are manufactured with a seamless design and ergonomic fit which improves blood circulation for maximum performance.The sleeves resist ripping and tearing and can be used in all weather conditions.