Drawing inspiration from the 15-50 cross-country spike, Asics' Gel-Sonoma 15-50 sneaker is trail-ready but still suitable for everyday wear. The grey-on-grey upper utilizes the tooling from the first two Gel-Sonoma trail shoes and sits atop a midsole incorporating Gel cushioning for impact absorption and comfort. The sole uses Trusstic System technology to reduce weight while maintaining structural integrity, and the outsole has deep grooves for traction on a wide variety of surfaces.