Optimus gloves are constructed of the highest quality 6.5 ounce kip leather. This leather has proven to be very durable and provides a unique feel that we think Vinci Pro fans will appreciate. We utilized leather finger linings put a solid palm pad in the pocket for beefed up protection from the ball where you need it most. By far, this is the best Vinci Pro Baseball glove series to date, which is why it was named “Optimus,” which is the Latin word meaning “BEST.”