When a top is made of 80% merino wool and 20% polyamide for durability, with a substantial material weight of 300 g/m², you know they are well-suited for very cold conditions when needed. The material can be worn directly against the skin, so you can wear this over long or short sleeved base layers. Wool traps the air warmed by your body, naturally resists odor buildup, requires less frequent washing than technical fibers, and feels comfortable even when damp. Merino wool works not only in freezing conditions but also in situations where you repeatedly alternate between movement and restit helps balance temperature fluctuations. - Regular fit, unisex sizing: just check the size chart and choose yours - Short zipper at collar - Made in Kärsämäki, Finland - Mulesing free product In most cases, airing out the garment is enough after use. When residue from the skin affects the comfort of the material, machine wash with a wool detergent on a wool cycle, and dry on a clothesline or dr