This is a gauze blanket made of five layers of 140x190cm gauze. The side that touches the skin is cotton & linen, 70% cotton and 30% linen. The surface is 100% cotton, using Japanese-made, traditionally bleached gauze. Made in Japan. The side that touches the skin is a linen blend, providing a cool and refreshing feel. It is breathable and doesn't get stuffy even when you sweat. The layer of air created between the fabrics protects the body from temperature changes and releases moisture during sleep. The more you use it, the more it will become familiar to your skin.