1 Dozen Baseballs Super Seam Technology: With seams 20% higher than raised seam baseballs, pitchers experience superior control on the mound. Fielders can locate the ball quicker in their glove and throw with more accuracy. Dura-Core Technology: Added to red cushioned cork to help the ball retain hardness. Formed to withstand impact and give you the game changing performance you need. Gray wool winds Grade B full grain leather cover