Diehard outdoor enthusiasts often have a love/hate relationship with cotton. This ancient fiber dates back to the reign of Egyptian pharaohs, and while it has many uses, winter clothing shouldn’t be among them. This is due to the fact that cotton holds moisture much longer than other fabrics, thereby wicking away precious body heat instead of moisture. It’s so bad, in fact, that the slogan “cotton kills” is frequently used in reference to outdoor clothing. Strong words, and good to remember when getting dressed, but cotton isn’t all bad. When applied to the right task, this fiber can start a fire, light our way, and help us acquire meat in a survival setting. Skip the cotton clothing in cold weather and instead, use this age-old fiber to help you survive.