A single item for all of life – from boardroom to Netflix comfy bedroom, our sweaters are reliable, comfortable, and appropriate for any situation. Each sweater is 3D-knit in Brooklyn, NY, from the soft, versatile underbelly fiber of high elevation Tibetan yak called khullu (“coo-loo”). Not only is khullu warmer and more breathable than lambswool and cashmere, but it’s also world-renowned for its antimicrobial properties, meaning it doesn’t trap odor like cotton and synthetic materials. Backed by a lifetime guarantee. Reduce your carbon footprint with a sweater that lasts for life.