The Airtube Ergo Merino is the zero odour favourite. Made from lightweight but super technical Merino wool and featuring an ergo nose shape it can be comfortably worn as neck gaiter or facemask. It is easily compacted so you can keep it in your pocket when it's not needed. Merino wool is naturally non-itch and no odour allowing you to wear it comfortably for longer. The signature embroidered Airhole provides a clear passage for breath, preventing moisture build up which causes a cold, wet face. Merino wool is a free range fibre that naturally protects against cold and heat.