Teisen Imperial Fiber 100% Linen Envelope-Style Pillowcases (45x80cm) Set of 2. Made in Japan. Linen is a cool material in summer and warm in winter. It's been treated with xylitol, making it especially refreshing to use in the summer. Brand new, unused. I bought two and liked them so much that I stocked up, but the high-quality linen and good stitching make them very durable. They will probably last a lifetime with normal use. (I also have Teisen sheets, towels, etc., and they haven't been damaged even after years of use.) I would prefer to sell them as a set, but if you want only one, it's 2800 yen.