Lightweight, fluid and flexible, the Zealot ISO3 delivers Saucony's very best running innovations into a streamlined, energized package. The 3mm EVERUNTM topsole construction provides an energized ride, while the TRI-FLEX outsole gives just enough flexibility and freedom of movement with every stride. Overview ? Successor to the Zealot ISO 2 ? Brand new engineered mesh brings a more dynamic, adaptable fit ? Molded heel collar provides a lockdown heel fit ? New ISOFIT design focuses on a dynamic, adaptive midfoot fit ? EVERUNTM topsole construction provides continuous cushioning from heel strike to toe-off ? New TRI-FLEX outsole design focuses on forefoot flexibility and a smooth, flowing transition Specs ? Shoe Category: Neutral ? Pronation: Neutral ? Cushion: Plush ? Construction Type: Natural Motion ? Surface: Road, Track ? Arch: High, Normal (mid) ? Water Resistant: No ? Waterproof: No ? Offset: 4mm ? Heel Stack Height: 26 ? Forefoot Stack Height: 22 ? Weight: 8.5 oz. | 241 g.