Qualities & Benefits Thermo-active underwear should fit the body, enable unconstrained movements, and effectively dispose of sweat to the next layer. If the underwear is loose, the moistness is not quickly taken outside and stays on the skin. The PESSO Merino underwear is advanced moisture-transporting wool underwear and is soft, breathable, and warm. The inside layer transports moisture away from the body and the outside layer keeps You warm in cold weather. The garment never feels itchy against the skin, because is made from very small micron diameter fibers, and allows you optimal comfort for all outdoor activities. Material: Outer layer - 100% merino wool (57% of product) Inner layer - PURA®  100% polypropylene (43% of product) Color: Black Size: XS-4XL Wool products naturally include antimicrobial properties, keeping your garment odor-free. - Very soft and comfortable merino wool for maximum comfort. - Polyester on the inside for best wicking. - Comfort seams. - Temperature control. - Light & soft merino wool. PESSO Merino underwear is specifically designed for active life, training, and work. The products have been designed to provide comfort, superior wicking ability and warmth in the most demanding conditions. The fabric is quick-drying, soft to the touch, and efficiently moves perspiration away from the skin. All physical effort is accompanied by increased sweating. This is why the main objective of thermo-active underwear should be quick liquid disposal, which in turn provides optimal body temperature. PURA® fabric technologies with merino wool: Polypropylene Ultra Rapid Absorption helps to transport moisture away from your body, keeping you dry during strenuous activity, while the soft merino wool ensures you stay warm in the coldest conditions. Base Layer Guide
