Designed for long distance trail running and park racing, the blue INOV-8 Trailfly Ultra G300 Max in- and outdoor staple is one tough trainer. Featuring graphene technology outsole that combines high abrasion with superior grip, this sports shoe is scientifically proven to be 50% stronger, 50% more elastic and 50% harder wearing. Inov-8 Trailfly Ultra G 300 Max Sneakers