GRAPHICS : Marked with official Wilson® script logo. SEWN STRIPES : Two Black Seam bordered Stripes of patented composite material, giving extra grip points. SIZES : Official size (High School and College ages 14 and up), Youth size (7th – 8th grade ages 12-14), Junior size (4th – 6th grade ages 9-12), Pee Wee size (Youngest organized competitive level ages 6-9).