Two-piece set from Gonji, a shop in Kyoto: Tochigi Leather Cup Sleeve & Oda Pottery Handmade sleeve, 2mm thick The leather uses high-quality Tochigi leather. The cup sleeve is handmade and becomes more appealing with use, making it a long-lasting item. Purchased as a set for 11,000 yen. Stored unused since purchase, the outer box has some discoloration, but the items themselves are completely unused. I'd like to sell them to someone who appreciates them.