Run long over hard trails or rocky ground in the TRAILFLY™ MAX. With a 24mm heel midsole stack and 6mm drop, the TRAILFLY™ MAX is highly cushioned and comfortable to wear over long distances. Graphene-infused rubber provides uncompromising grip on hard and rocky surfaces, while the TRAILFLY's unique ADAPTERFLEX groove adapts, reacts and moulds to the terrain you're running on.