The men's thermal shirt  Willie-M  by Kilpi is a fleece made of a functional and very pleasant material called OPTI-DRY. Thanks to this fabric, it dries quickly and body moisture evaporates quickly. The shirt adapts perfectly to the body and follows every movement. It has a high collar with zip to protect the neck from the cold and wind. Under the arms and on the shoulders there are inserts in breathable material. It can be used for all sports and outdoor activities, where you are always pleasantly kept warm.