NASA-Approved High-Performance Material Bedding Excellent temperature-regulating material! This product is cool in the summer and warm in the winter. Regular price: 10,978 yen for 2 (5,489 yen per piece) Outlast is a temperature-regulating material that controls the skin's surface temperature to the range (31°C-33°C) that humans find most comfortable. *Size: 100 x 100cm (including the feathered part: 174 x 100cm) *Composition: Outer fabric: 100% cotton, Inner fabric: 65% polyester, 35% cotton or 100% polyester, Filling/Outlast(R) non-woven sheet Thank you for viewing.