We've taken the fan-favorite Torin and tuned it for the racecourse. We have added the new Altra Quantic™ midsole and removed the strobel layer with results in 2mm less cushion/height than the Torin 4 Plush for a lighter, faster and more responsive Torin. The strategic decoupling on the outsole gives you a flexible but smooth ride throughout and with a lightweight performance mesh, this shoe is ready for spirited miles.