Nike Kids Hyperdiamond 2 Keystone GG Baseball (Toddler/Little Kid/Big Kid) Get into hyperdrive on the field with the Nike® Kids Hyperdiamond 2 Keystone GG Cleated baseball shoe! Synthetic leather and TPU mesh upper. Traditional lace-up closure for a snug fit. Pull-on tab at rear for easier on and off wear. Textile lining in shoe.