WSI Sports HEATR Base Layers

WSI Sports, a Minnesota-based company & the “Cold Weather Experts,” proudly manufactures Performance Apparel, Technical Base Layers and Custom Gear, 100% made in the U.S.A! WSI manufactures base layers that incorporate patented HEATR® fabric. The base layers are lined with HEATR® in areas that your body needs it most to keep you warm on cold days!