Available only in selected Rawlings baseballs comes Extra Inning Technology (EIT). EIT baseballs are used at the highest level of collegiate play as well as by countless high schools and youth leagues. This baseball has Rawlings raised seams with full grain leather cover and 15% wool windings which makes it hands down superior to traditional balls. It also features a Core Bond adhesive. This baseball is NFHS stamp approved. Rawlings R100-H2 NFHS Baseball - 1 Dozen.