The Asics Mens' Gel-Equation 3 is friendly to the neutral and underpronating runner. Features include: Synthetic and mesh upper, Lace-up front, padded collar and mesh tongue, Textile lining and cushioning insole, Supportive midfoot Trusstic System(R), SpEVA shock-absorbing compression-molded midsole, GEL(R) Cushioning System,Durable rubber traction outsole and AHAR(R) heel plug