Web gems are made with the Mizuno Pro GMP63 Fielder's Glove. This high-quality baseball glove utilizes 4D Technology which creates a pattern that performs for the dynamics of catching and is designed using data from the best players in the game. The choice cut Japanese tanned Deguchi leather provides the ultimate in feel and softness. The GMP63 uses a Tartan Shock web and has been created for use by pitchers and outfielders.