Custom Number/Letter - Moisture Wicking polyester/nylon mixture 6 Colors and 5 Sizes to choose from Perfect for any sport - KIDS & ADULTS Padded to protect your elbows Choose from right arm or left arm PIck Your Number or Initials! NEW! Moisture Wicking Compression Arm Sleeve. Available in 6 colors. Made of polyester and nylon. Each sleeve has a silicone lining on the inside to keep it in place. 4 sizes available. Manufactured by Sports Farm LLC. Size Information: Small 15" long & 8.5" Bicep - Medium 15" long & 9.5" Bicep - Large 16" long & 10.5" Bicep - XL 17" Long & 11" Bicep