This relaxed crew is made from a thicker, 7-gauge cashmere yarn for extra-lofty warmth. It’s 86% heavier than regular cashmere. We also added contrast detailing under the cuffs, so you always have something up your sleeve. All cashmere fibers are hollow and made to trap warmth—like a polar bear's fur. Not all cashmere is equal, however. We source our Grade-A cashmere from Inner Mongolia, using only the longest (35 millimeter) and finest (15 micron) fibers to create garments that are durable.