Rawlings Raised Seam Tournament Grade Pony League Baseballs, 12 Count, RPLB Full-grain leather cover Rawlings Raised seam Eit (extra innings Technology) Advanced3 Cushioned cork center Full grain leather cover for added durability Cushioned cork center Rawlings raised seam for improved grip Rawlings exclusive "EIT Advanced" Extra-Innings technology. Rawlings RPLB baseballs are for use in Pony League tournament play