Like other Darn Tough socks, Darn Tough Men's Animal Haus Crew Lightweight Lifestyle Socks are durable and comfortable, with a classic crew fit that will not bunch or slouch. They're lightweight and provide zero unnecessary cushion â?? that way, you always experience a smooth, standard fit in your favorite everyday shoes. The Animal Haus is akin to a world-class dress sock and is made of merino wool, nylon, and Lycra Spandex for an amazing, silky feel. Seams are undetectable in this fine-gauge knitted sock, which offers even greater comfort.