Lightweight breathability and durability Sock-like fit Flywire cables Zoom Air unit for responsive cushioning Exaggerated outrigger for stability Full-length, thin-web rubber sole for traction Get a locked-down feel and lightweight comfort with these Nike Air Zoom Dynamic Cross Trainers. These trainers come with a sandwich mesh upper delivering superior breathability, while the heel's Zoom Air unit provides responsive cushioning. Flywire cables in the forefoot and the one-piece bootie construction add a lock-down and sock-like fit, to give you the support you need for your workout.