ATOM Terra V3 Low Density Trail Running Shoe AT202The Terra 3. 0 is evolution on the trail: lighter, more stable, and with a reinforced upper that improves support without sacrificing comfort. It features an outsole with ATOM GRIP compound and 4 mm lugs that bite into the ground with every stride, delivering traction and control on any incline. Designed for those who never stopbecause trail running isnt just about running, its about pushing your limits.