The Wilson A500 Series Baseball Glove features Exclusive ECCO ¿ Leather. ECCO ¿ leather is unsurpassed for comfort and quality, it is the ideal material for Wilson advanced designs. The ECCO ¿ name stands as a guarantee of game-improving performance and fit. It also features Dri-Lex (r) Ultra -breathable wrist and back finger lining which transfers moisture from the skin, keeping your hand cool and dry. This model is 11 1/2 ” and features a ASO – Web. Wilson is the Official Ball Glove of Major League Baseball.