The cushioning of the GEL-NIMBUS 25 shoe feels like bouncing on a cloud. This neutral sneaker is redesigned with new materials for smoother, more fluid running. A soft mesh upper comfortably wraps around your foot and offers optimal ventilation. Its new mesh upper structure offers optimal flexibility and wraps around the ankle for the perfect fit and comfort. The midsole has the densest cushioning of any model on the market today. With FF BLAST PLUS ECO foam, this lightweight sneaker offers soft cushioning and reduced environmental impact.