Ridge Merino Wool Men's Inversion Midweight Bottom 100% Merino Wool, 190g per meter Naturally super soft, odor resistant, moisture wicking Flatlocked seams for reduced chaffing Full length cut with fly Recycled polyester Ridge custom waistband Soft: no itch, premium ultra-fine 18.5-micron fibers feel great against your skin Climate control: Natural temperature regulation means Ridge insulates when its cold and lets heat escape when temperatures rise Moisture management: Ridge natural fibers wick moisture away from your skin to prevent clamminess No stink: Merino wool naturally and permanently resists odor without the use of chemicals Sun Protection: UPF 50+ certified