The first thing you notice about the Nike React Terra Kiger 9 is the upper, with hard wearing and abrasion resistant overlays in key areas like the toes, rubber outsole wrap, heel, and forefoot. Made from a tough engineered mesh the actual upper is lightweight with a midfoot band offering stability and support. It has lost the forefoot Air unit from the previous model, for a closer to the ground, lighter feel that, thanks to the full length React foam midsole. doesn't sacrifice comfort or speed. High abrasion rubber and multi directional lugs provide traction on ascents, descents and across a variety of surfaces, for confidence in your footing over the most challenging ground.