This trail running shoe is part of the Columbia Montrail collection, so you can be sure of a superbly designed and versatile trail shoe for training or racing. If you go in for ultra trail races and trail running this is where they really perform at their best, with an ideal combination of lightweight flexibility, support and traction. A seamless upper with collar foam and reinforced toe cap provide comfort and protection, the midsole has exceptional FluidFoam cushioning, and the full-length rubber outsole with a TrailShield protection plate gives confident traction on changeable terrain. - Ride heights: 19 mm heel / 11 mm forefoot. - New seamless upper, coupled with enhanced collar foam, fully integrated gusset, and reinforced toe cap. - FluidFoam midsole for exceptional cushioning. - Patented FluidGuide technology for enhanced midfoot stability and a smooth feel. - Full-length rubber outsole. TrailShield protection plate integrated with forefoot flex grooves. Multi-directional lug patterns provide traction on varied surfaces. 4 mm outsole lug height.