The Nike Juvenate has a fully collapsible upper with no tongue and a sock-like construction, which means seamless comfort and easy transportation. Fully collapsible upper and heel for easy packing. Airy mesh upper with honeycomb-shaped foam pads for warm-weather comfort and style. Full-length midsole is durable enough to serve as an outsole. Rubber outsole with Waffle -inspired design for traction and durability.Nike