Cal Ripken Deluxe Reversible Australian Merino Wool Mattress Pad by Herington, Twin Cotton Imported 100% Australian Merino Wool Made in Australia Two pads in one, 500 GSM 100-percent Australian Merino Wool fleece, reverses to 350 GSM 100 percent Australian Merino Wool fill; quilted with a 233 thread count 100-percent japara cotton cover that is extremely soft and durable; a fully elasticized skirt keeps the pad in place and eliminates shifting and bunching Made from all-natural materials and chemical free Woolmark licensed which guarantees that we follow extremely stringent guidelines of quality, purity and fiber content Twin size measures 38 by 75 for full coverage; designed for year round use and to rejuvenate your mattress; dry clean only