Wilson A2000 ASO-B 12" ASO Web Pitchers Baseball Glove (Left Hand Throw) premium-steer-hide Pitchers' glove in black for left-handed throwing; 12-inch size Pro Stock leather hand-selected for rugged durability, consistent performance Dual Welting patented pre-curved design provides a stable pocket Ultra-breathable Dri-Lex interior lining helps keep your hand cool and dry ASO web, open back