Want to stay warm in the field? You know it starts with the right base layer: our Women&';s Pecora Lightweight Merino Crew. We make it using an exclusive, DuraSpun Merino fabric - Merino fibers wrapped around a single strand of CorduraA(R) thread for incredible strength. In other words, the Women&';s Pecora Lightweight Merino Crew is more than soft, comfortable, moisture-wicking and naturally odor-resistant. It&';s unbelievably tough, just like you.