New for 2011. The Velocity shoe is an evolution of the successful Matrix shoe, which has been worn at many Test grounds around the world. Gray Nicolls have evolved the ultra lightweight mesh running shoe concept with additional cricket specific features. UPPER - Ultra Lightweight air mesh upper with strategic support elements. Revolution 2D injected support elements. Pre formed breathable footbed with arch support. S.H.F = Superior heel fit, memory foam in heel, which moulds around shape of individuals foot providing improved comfort and minimum slippage.