The Inov-8 Trailfly is perfect for everyday sessions, and longer runs thanks to the deeper cushioning compared to its sister shoe the Trailfly Speed, helping you feel fresher for longer. POWRFLOW PRO combines with a BOOMERRANG footbed to give you just right levels of bounce and energy return, while a flexible META-SHANK rock plate helps protect you from painful rocks and roots on route. Graphene enhanced rubber in the outsole gives a grippy yet durable hold, while the 4mm lugs provide confidence across a variety of ground types.