New Balance This rugged and durable trail running shoe features N-FUSE technology to provide you with superior cushioning for all outdoor activities, and AT Tread to give you traction everywhere from a running trail to the treadmill at the gym.Synthetic and mesh upper with a Ghillie lacing system provides a custom, supportive fit. EVA foam midsole makes for firm yet flexible cushioning. N-Fuse heel joins together foam of two different densities. The top foam is less dense for soft cushioning, while the denser bottom foam provides support and compression set resistance. Aggressive lugged outsole gives maximum traction for off-road activities.