New Balance WRPD Runner Sneakers in Grey Matter. These sneakers blend technology and design for a comfortable and trending look. They feature a suede upper with mesh and suede overlays, a warped rubber outsole, and FuelCell cushioning technology. The composition is 70% suede and 30% mesh, with a 100% rubber sole. This style is ideal for adults seeking a blend of comfort and modern aesthetic in their casual footwear.