This light neck warmer is made from a Merino wool blend, making it antibacterial, naturally odour resistant, and extremely durable. As this product is available in one size, it is highly stretchable for maximum comfort; effortlessly keeping your neck warm, as well as chin, nose, cheeks, and ears. The fine natural fibres easily allow for water vapour to escape as you push hard on the bike, yet their softness ensures lasting comfort.