CLOUD is a washable wool with cashmere like softness and supple elasticity. The fine micron wool fibers of CLOUD act as a thermal regulator, enabling warmth in cool weather & comfort in warm weather. Large crimps in the wool provide natural stretch enabling smooth movement to the material. Regular wool fibers have unique surface texture of overlapping scales, or cuticles. CLOUD wool fibers have scales set wide apart and flat which give its smooth, cashmere like texture. The CLOUD series is naturally elastic and has the ability to stretch comfortably with the wearer. The big crimps in the wool fibers allow for the fabric to retain shape and resist wrinkling. These traits make this quality perfect for baselayers.