Pick these up and you will be amazed at how light weight they are! Made with Reebok running technology, this boot feels more like a track shoe. The lightweight, flexible upper is made of two durable materials: ballistic nylon provides flex and breathability. Strategically placed suede leather gives support and stability where you need it. Inside is a nylon mesh liner with a removable Polyurethane cushion insert for both comfort and shock protection. All built on top of our lightweight injected EVA midsole and dual density outsole with a ground-gripping rubber tread. Side air vents keep feet cool. 100% non-metallic. Sizes for men and women.