The Merhat 6 children's hat is a great functional piece made of high-quality material with an admixture of merino wool, which will protect you from the cold and wind. Merino is a natural material suitable for allergy sufferers with a lot of great properties. Properties: It maintains body temperature. It is perfectly breathable. It perfectly wicks moisture away from the body. The natural antibacterial property eliminates odors. Excellent thermal insulation Comfortable elastic Please note that Merino is a natural material whose completely natural phenomenon is pilling, which therefore cannot be a reason for a later complaint about the product.