Brooks Women's Ghost 17 Running ShoesColor: Grey/Blue/PurpleDesign:New double jacquard air mesh upper and kickback collar provide added structure and comfortIn-Shoe Comfort:Premium nitrogen-infused DNA LOFT v3 cushioning delivers lightweight softness and feel-good comfort, mile after mileThe newly designed midsole combines with precise flex grooves to promote added flow toward toe-off3 mm of added DNA LOFT v3 cushion in the forefoot, 1 mm of added cushion in the heel for a 10 mm offset and added comfortDurability & Traction:RoadTack HPR Heel Rubber outsole provides optimal traction