Minimalist Merhat beanie is a great functional piece of quality 100% merino wool that will protect you from cold and wind. Merino is a natural material suitable for allergy sufferers with a lot of great properties. Maintains body temperature It is perfectly breathable Wicks moisture away from the body Natural antibacterial property eliminates odours Please note that Merino is a natural material whose completely natural phenomenon is pilling, which therefore cannot be a reason for later product complaint.