Custom Number - Moisture Wicking polyester/nylon mixture 3 Colors and 5 Sizes to choose from Perfect for any sport - KIDS & ADULTS Check out the size chart for a perfect fit PIck Your Number! NEW! Moisture Wicking Compression Arm Sleeve. Available in 3 colors. Made of polyester and nylon. Each sleeve has a silicone lining on the inside to keep it in place. 5 sizes available. Manufactured by Sports Farm LLC. Size Information: Youth Medium 14" long - 4" top - 3" bottom Youth Large 14.5" long - 4" top - 3" bottom Small 16" long - 4.5" top - 3" bottom Medium 17" long - 5" top - 3" bottom Large 18" long - 5" top - 3.5" bottom