Joma Boy's Combi Long Sleeve Training Shirt 100% Polyester Interlock Chest Size (inch); 4 Years: 22-23, 6 Years: 23-24, 8 Years: 24-26, 10 Years: 26-29, 12 Years: 29-31, 14 Years: 31-34 Slim Fit That Enhances Flexibility And Athletic Output Provides Enhanced Flexibility And Mobility For Better Freedom Of Movement Crew Neck Collar Prevents Sweating And Chaffing Of Other Garnments Made With Interlock Weave To Make Soft Firm And Absorbent To Wick Away Moisture