Springy foam delivers a balanced ride with responsive cushioning. Built with a Nike Air unit and a thick stack of Cushlon 3.0 foam, the Winflo 12 is the perfect combination of enhanced responsiveness and consistent cushioning. Breathable mesh up top and an accommodating fit help you feel locked in and ready to push for that extra mile. Breathable Upper The upper is made of an open-hole mesh for optimal breathability. Responsive Cushioning A higher stack of Cushlon 3.0 foam than previous models gives you more comfort underfoot. It works with a Nike Air unit in the heel to help energize your every stride. Flexible Fit and Outsole We widened the toe box, so you have a little more room in the forefoot. Flex grooves in the outsole offer integrated flexibility and help aid your heel-to-toe stride. Increased Cushlon 3.0 foam stack height compared to the Winflo 11 Accommodating fit Open-hole mesh upper More Details Weight: Approx. 261g/9.2oz (Women's US 8) Heel-to-toe drop: 9mm Rubber outsole Low-cut collar Classic laces