#2 Choose the right fabrics – Because we’re constantly exposed to moisture through sweat and precipitation while hiking, it’s really important to wear clothing that dries quickly. Synthetic fabrics, like polyester and nylon, wick moisture away from the skin and are generally pretty durable and affordable. Natural fibers, like wool, keep you warm even when wet and are naturally antimicrobial for minimal odor buildup. Cotton should be avoided. It stays wet for too long and holds moisture against the skin, which can cause problems like hypothermia, chafing, and blisters.