La Sportiva has managed to create a mountain shoe unique in its kind, and this Mutant works in virtually all situations of trail running in which you can get. The design of its studs makes it pull on very different terrains, from loose rock to greasy surfaces, in which it unfolds like a fish in water. As for its upper cut, it incorporates a reed system with gaiter and FusionGate laces that form an outstanding fit, hugging the foot perfectly and preventing the entry of pebbles or dirt inside. Its weight, of 320 grams, frames it like a light but consistent shoe, perfect for medium and long distances and vertical kilometers.