The GEL-SONOMA 15-50 shoe is rooted in the concept of outdoor exploration. This model is based on the Cross Country Model 15-50 upper, with spikes. They were designed atorigine for competitive runners who run on a wide variety of terrain. Today, they have been modified to handle city streets and mountain trails. The accessories, meanwhile, use components from the original trail GEL-SONOMA shoes. From everyday foot traffic to hiking on rocky hills, these features create advanced cushioning and traction in a variety of environments.