Stability at maximum performance! This mid-height hiking shoe offers the best of the best: an Ortholite insole for unparalleled comfort, a Vibram SLE midsole made of super lightweight EVA for up to 15% more cushioning, a Flextron joint spring for maximum movement control and torsional stability, as well as a Vibram Megagrip Litebase outsole with Traction-Lug technology for unbeatable grip. The abrasion-resistant mesh upper and waterproof GORE-TEX membrane are complemented by a rocker sole construction that allows for a smoother stride and more efficient push-off, enabling you to progress even faster in challenging mountain terrain with the Aenergy Ultra Mid GTX. Features include a pre-shaped tongue construction, rubber toe cap, elastic tongue design, Vibram Megagrip outsole with Vibram Litebase technology, rubber toe protection, abrasion-resistant jacquard mesh upper, lace protection to keep laces clean, lug depth: 5 mm, premium midsole cushioning for stability and a more comfortable heel strike, rocker sole construction for smooth landings and powerful push-offs, sole height: 43 mm/35 mm.