Saucony Carrera XC Spike running shoes provide excellent torsional rigidity and the traction necessary for the best performance. A Pro-Lock System keeps your feet in place and locked into position on the platform. These bright and attractive colors are sure to be a stand out.Upper: Thin and flexible Flex Film™ overlays are welded onto the upper for lightweight support. Pro-Lock Lace System features supportive straps on eight side of the midfoot to encase the foot and lock it to the platform. Flat laces reduce irritation and pressure points.Midsole: S SL EVA blend maximizes rebound and durability while minimizing weight.Outsole: Full-length 6-pin Pebax® Spike plate. XT-600 carbon rubber outsole material offers outstanding abrasion and traction properties. Comes with spikes and wrench.