Teisen Imperial Fiber 100% Linen Envelope Pillowcases (45x80cm) Set of 2. Made in Japan. Linen is a cool material in summer and warm in winter. Brand new, unused. I bought two and liked them, so I stocked up, but the high-quality linen and good sewing make them very durable. They will probably last a lifetime with normal use. (I also have Teisen sheets, towels, etc., but they haven't been damaged even after years of use) I would prefer to sell them as a set, but if you purchase one, it will be 2600 yen.