The Men's Blocker Outdoors Koretec Heavyweight Bottoms are a hardworking base layer built for warmth. These men's base layer bottoms feature S3® silver technology that prevents odors to keep you fresh all day. 4-Direction Stretch^TM fabric allows for full freedom of movement with a comfortable fit, while flatlock seams and tapered legs minimize bulk for easier layering. These Koretec bottoms are made with a smooth polyester fabric and a light fleece lining that efficiently trap body heat while retaining their versatility and mobility. Designed to block odor and keep you warm, the Men's Blocker Outdoors Koretec Heavyweight Bottoms are the ultimate base layer for chilly hunts and hikes.