Designed for mountain biking in altitude where a breathable sock is needed, which does not make the foot sweat but which still ensures the warmth that may be necessary at high altitudes even in the summer season. The cushioned bearings make it ideal for sections to be crossed on foot with the bike on the shoulder. This MTB merino wool sock is also suitable as approaching and light trekking sock with low shoe. Very perfortming also as a merino wool trail and ultra trail sock in the high mountains like its sister SKY BLACK TECH. Doubled yarn of pure extra fine merino wool certified NO MULESING and polypropylene. Anti-blister and anti-odour thanks to the properties of the patented yarn we use in manifacturing. First-level gradual compression sock wraps the foot well, adhering without defects for an ultra-stable fit.