ECCO YAK Leather - The foundation of lightweight leather footwear, Yak is 3x stronger than cowhide, allowing it to be skived thinner, producing a lighter glove. * 2X Palm Construction - A thin, strategically cut piece of leather is palced between the palm liner and outer shell, providing maximum pocket stability and quicker break in. * Pro Stock Patterns - Exclusive hand designed patterns continuously improved by Aso-san and the Wilson Advisory Staff year after year. * 2-Piece Hook & Loop Back Closure