Burton Women's Olympus Jacket, Forged Iron, Small 54% Cotton, 46% Nylon, Lining: 100% Nylon Imported Faux Fur Trim at Hood Keep cool: When youre warm, breathable pores on the Living Lining expand to release excess warmth and prevent overheating. Stay Warm: When youre cold, breathable pores on the Living Lining shrink to trap body heat and keep you warmer for longer.