JMJ Bat Co. is in its first year of selling Ash and Maple Bats. Place your order today. Call or Email to place an order. If anyone would like to try swinging the Ash or Maple Bat you can visit JM Sports Academy and swing the sample bats. Co Owners Jose Diaz, and Junior Medina. Also, JMJ is starting a kip leather glove line. The Kip Leather is lighter and tighter then all other gloves. As a result the gloves are easier to break in with more tensile strength. The Kip leather glove cost more but the comfort of the glove and playability makes an excellent fit for the serious ballplayer.