Ultimate reversible 2-in-1 mattress pad.Loft: 1" thick. 5 year warranty.Sleep side #1: fine washable wool fleece, 400gsm (12 oz/sq. yd).Sleep side #2: 100% natural cotton percale, 270TC, ivory.Fill: 100% washable wool (6 oz/sq. yd).Easy care: machine wash in cold water and dry on low heat or air dry.