The N45 Low GTX is a trail runner built to go the distance, made to handle mile after mile-and this nimble trail runner can be rebuilt to take on even more. Designed with toughness and comfort in mind, the lightweight mesh upper is abrasion resistant, and the EnduroFoam midsole, a nitrogen-infused supercritical foam, provides rebound shock absorption and returns energy to the feet. The grippy rubber Vibram® outsole utilizes Traction Lug technology and Megagrip traction for superior stability. The quick-dry GORE-TEX INVISIBLE FIT construction protects against wind and water and helps keep you on the trail in unfavorable conditions. In addition, the foam-fabric tongue and gusset hug your instep to prevent unwelcomed hotspots.