For 2016, the versatile CHALLENGER ATR 2 has been updated with a more supportive fit through the midfoot, and increased comfort across the top of the foot for those looking to run both road and trail. The early stage Meta-Rocker remains unchanged to provide a smooth ride, and the 4mm lugs give all-terrain traction. If you want one shoe for all surfaces, look no further than the Challenger ATR 2.