Design: Engineered mesh is lightweight and breathable to help your feet stay cool Flywire cables work with your regular laces for a snug and secure fit In-Shoe Comfort : Zoom Air unit under the front of your foot brings more bounce with every step and stride; it combines with soft foam for all the cushioning you need to go the distance Padded tongue and collar lining provide extra slip-in comfort Durability & Traction: Rubber sole has a waffle-inspired traction pattern to help grip surfaces and provide durability Cutout grooves increase flexibility for a better transition from heel to toe Heel extension maximizes landing space with every step and provides extra durability for feet on the move