"Renowned as nature's true insulator, wool keeps you warm in winter and cool in summer. The soft cellular weave is perfect for warmer climates all year round.100% pure new merino lambswool satin bound on 2 ends (king - 4 sides) made in Australiadry clean onlythis product carries the "Woolmark" guarantee of product qualitySorry gift wrapping and overnight shipping are not available for this style."