Nylon, the first of the synthetic fibers, is very strong, resists abrasion and resists wrinkles. It has a natural luster, holds body heat and resists moths. Nylon dyes well but fades in the sunlight, may pill and melts under high heat. Nylon is naturally mildew resistant, which has led to its popularity for such things as mosquito netting used in the tropics. Nylon is a thermoplastic man-made fiber synthesized from petroleum.