inov-8 Trailfly Ultra G 280 First Run & First Impressions Review. It's always good when we can get our hands on new shoes nice and early, get some good miles The Inov-8 Trailfly Ultra G 280 is a highly cushioned trail shoe with a wide fit. The Trailfly, as its name suggests, is a shoe designed for long distance trail running. Its unique selling point is the high level of cushioning and energy return offered by the nitrogen infused foam in the sole unit. In trail shoes grip is king, and the Inov-8 Trailfly Ultra G 280 uses their famous graphene enhanced rubber to give you the world’s toughest grip. Scientifically proven to be 50% stronger, 50% more elastic, and 50% harder wearing, you get zero compromise between traction and durability. The midsole uses a new nitrogen-infused ultralight foam Inov-8's nitrogen-infused foam offers springy responsiveness in their newest trail shoe, one of our favorites this year. The Inov-8 Trailfly Ultra G 280 is a trail shoe built for off-road runs on harder surfaces and sees Inov-8 try to innovate with a new midsole foam.For the fi ZV8CQF.