The Nike Men's Flex Run 2014 Running Shoes in navy and white boast a ventilated mesh upper with strategically placed synthetic overlays for seam-free comfort and support. With a tubular construction which allows more air underfoot to promote even transitions from heel strike through to toe-off the trainers have a sculpted Cushlon midsole which provides springy responsiveness. Adorned with reflective detail to help keep you safe in low light conditions they're set upon a durable rubber sole with a waffle pattern for excellent grip. - L.M. Features: Nike Men's Flex Run 2014 Running Shoes Ventilated mesh upper Strategically placed synthetic overlays for seam-free comfort Tubular construction allows more air underfoot for even transitions Sculpted Cushlon midsole provides springy responsiveness Reflective detail Rubber outsole with waffle tread Midsole offset: 13mm Weight: 374g (based on men's size 10)