Soft, warm and comfortable LIFA® and merino wool boxers. This non-itch pure merino wool boxer keeps you warm with flatlock seams to keep you comfortable. Shell: 57% Merino Wool, 43% Polypropylene With a combination LIFA® wicking fibers and warm, breathable merino, these boxers keep the important parts warm and dry on cold days. We made sure they’re soft and have flat seams for max comfort.