The B-Driven Sports Compression Arm Sleeve Lot of 5 in 3X size is specifically designed for baseball players in all positions. Made from 80% polyester and 20% spandex, these arm sleeves provide compression for added support and protection during gameplay. The stylish black, white, and purple colors make them versatile for both male and female athletes. With a unisex adult size and a comfortable medium fit, these sleeves are a must-have for any baseball player looking to enhance their performance on the field.