The Black Diamond Project Lined Flannel - Women's is a lined flannel jacket for cozy warmth on cold days. Whether you're chopping wood for the fire, heading to town, or off on a hike, the Sherpa fleece lining brings plenty of heat. The organic cotton flannel exterior is brushed for softness, but still durable for getting outdoors. The sleeves feature a nylon lining, making layering up easy.