Expanding upon the multi-award winning Spin Ultra family, the Spin Ultra GTX is the perfect choice for logging some trail miles when the weather is not cooperating. The GORE-TEX invisible fit lining keeps inclement weather at bay, while the Vibram Megagrip outsole provides confidence inspiring traction on sloppy trails. Running or hiking, the Spin Ultra is the go-to option for foul-weather trail pursuits.