Boys' thermal underwear made of soft microfleece with 4FWarm technology, which ensures sufficient thermal comfort. Fleece has high thermal insulation properties, so it will keep you warm during activities in adverse weather conditions. It is pleasant and soft to the touch. There is a short zipper under the neck that you can unzip when you need to improve airflow. A fleece sweatshirt is a warm layer that you can wear under a jacket or ski suit. It will prove useful, for example, for skiing, snowboarding, trekking, running or everyday use.4FWarm technology provides thermal comfortstandup collar with short zipper protects against the coldraglan sleeves for freedom of movementwarm microfleece inside