This Champion Sports 12" Synthetic Leather Cover Softball is a great choice for training, games, and practices. The optic yellow color makes it easy to see, while the synthetic leather cover is durable enough to withstand even the hardest hits. The medium compression cork core (.47 COR) provides a good balance of pop and control, and the raised seams offer a better grip for pitchers and throwers. Sold in packs of twelve, this softball is a great choice for coaches and players alike.