A modern classic, the new Helium Crew works layered or alone in a performance blend that's soft, light and warm. Pointelle stitching at the neck and wrist offer just the right note of grace. A space-dyed wool-look synthetic blend that is lightweight, quick-dry and easy-care - ideal for travel. Wool-wrapped nylon and acrylic give this lightweight yarn a traditional look with great performance. Material: Acrylic, nylon, polyester.