The Reebok All Terrain Super OR's are extremely light and flexible with great traction, and just the right combo of heel-toe drop and cushioning along with a midfoot rock plate to make them great trail racing shoes on non-technical terrain. The upper is surprisingly breathable for a high-tech "durable" material, and they are extremely comfortable if you have a pretty normal foot width; though they may prove to be a little too narrow for some athletes.