You don't give up, and neither does the Hurricane ISO 3. This running shoe is equipped with the dynamic fit ISOFIT system which adapts to the shape and motion of your foot, increased cushioning and lasting stability, and an updated EVERUN Landing Zone under the heel that maximizes energy return from heel down to toe up. OVERVIEW ? Successor to the Hurricane ISO 2 ? Updated EVERUN Landing Zone under the heel ? EVERUN Topsole construction for enhanced energy return and continuous cushioning for every run, all run long ? Engineered mesh upper provides a dynamic, lightweight fit that's comfortable from start to finish ? ISOFIT system creates a dynamic fit by adapting to the shape and motion of the runner's foot ? TRI-FLEX outsole design for precise ground contact and optimal flexibility SPECS ? Shoe Category: Guidance ? Pronation: Moderate, Severe ? Cushion: Plush ? Construction Type: Stability ? Surface: Road, Track ? Arch: Normal (Mid), Low ? Water Resistant: No ? Waterproof: No ? Offset: 8mm ? Heel Stack Height: 30mm ? Forefoot Stack Height: 22mm ? Width Fit: Regular (D)