EVERYBODY BENEFITS FROM AN EXTRA LAYER. TermoSwed PLUS is designed for those that like to hunt, fish or enjoy any other sort of activity that involves both motion and a lot of time sitting still. If this describes your interests, PLUS is the right choice of underwear for you. The inner lining is channel knit loop ribbing polypropylene, whilst the outer layer is plain knit cotton. This transfers any perspiration from your skin out through the inner layer, where it is absorbed into the outer layer, keeping your body warm and dry. The unique design also ensures garments always keep their shape and are comfortable to wear. The two layered principle provides up to 50 % more insulation than an equivalent conventional cotton shirt, even when wet. TermoSwed PLUS garments are made from a slightly thicker material than our other clothing, to ensure maximum warmth during cold days in the countryside.