ASICS S4 Carbon Plate Racing Shoe for Sub-4 Runners

The ASICS S4 is a revolutionary carbon plate racing shoe engineered for runners targeting a sub-4 hour marathon. Featuring a full-length carbon plate for explosive propulsion, a lightweight upper with synthetic fiber and resin for breathability and support, and a durable rubber and synthetic outsole for superior traction. The Flytefoam midsole with a fixed insole provides a stable and comfortable ride. Designed with the four S’s: Speed, Stability, Safety, and Sub4.