This shoe is designed for speed and competition, so you can expect to fly like a hawk! The AHAR® (Asics High Abrasion Rubber) in the outsole not only keeps the shoe in top shape for hundreds of miles, but also enhances grip on diverse underfoot surfaces. There is a sock liner right above the main midsole material that is removable, adds extra comfort, and is even antimicrobial! Sounds like a fresh and clean run!