We use warm™2 because it offers a premium combination of thermal insulation and moisture transportation. Weighing between 200 and 300 grams/m², these fleeces provide more loft and trap more air than our warm™1 category without adding unnecessary bulk. Their unique construction is engineered to retain heat during rest while allowing air to circulate during activity, ensuring you stay comfortable in milder conditions. When paired with a shell, they deliver excellent insulation values for colder adventures.