SIZE 42. Very minimal wear. Only worn to try to break in. Ended up being too big. The Olympus Mons Evo is made for high altitudes and big mountains. Super insulated, this double boot combines a lightweight Vibram® PE outsole, reflective insoles and dual-density, ventilated foam liner to provide best-in-class insulation for your high altitude objectives. This super lightweight double boot has a PE thermal insulating inner boot that is coupled with a thermo-reflective outer boot with an integrated gaiter. We used a super insulating lightweight PE outsole to keep the weight down and the TPU midsole is excellent for step-in crampon compatibility and stability on steep terrain.