Breathable, open-hole mesh upper for a comfortable, lightweight fit and feel. Dynamic arch band works together with Flywire cables, wrapping the midfoot with secure support and lockdown over the footbed that can be adjusted through tightening the shoe's laces. Cushlon midsole for lightweight, responsive cushioning with every step. Carbon fiber midfoot shank adds stability and support over rough or uneven surfaces and terrain. Forefoot Pebax six-spike plate is shaped like a horseshoe to evenly distribute pressure and the force of impact while providing aggressive traction and explosive speed. Wt. 5.2 oz.