The Nike Air Alaris is a stable, cushioned running shoe made for the performance runner. Breathable mesh combined with synthetic overlays offer support in the upper. Dual-density Phylon™ midsole includes an Air-Sole® unit and a PU crash pad at initial heel strike for a great ride. BRS 1000™ outsole includes Duralon™ and Waffle Fill® for a smooth toe off. Wt. 12.0 oz.