Material: 100% Cotton 200-thread count broadcloth (thick) Type: Flat Sheet Size: 210cm x 260cm (Double Size) ※Single size is sold out※ Color: Beige Function: Radium ore powder is woven in using a special technique. ※The second photo shows the hormesis value. Approximately 3.8 microsieverts are emitted. (Measuring device is not included with the product.) ◆Bedtime becomes a bedrock bath time! ◆The bedroom becomes a hormesis room! .*Truly a dream sheet.* ★Care Instructions★ Machine wash in a laundry net on a normal cycle. The effect will not change even after washing. Brand new, unused, and unopened. ※This is a flat sheet. Please tuck it in around your mattress or futon. ※The striped weave pattern looks stylish and can be seen through the light. ※The photos are of the double size. ◆Safe for infants and the elderly. Retail Price: ¥37,800 (per sheet) [Made in Japan] Color...Beige Size...Double Main Material...Cotton Features...Other