This is a tumbler made of blown glass by Mitsuhiro Hara. I found it while looking for a large glass to drink lots of cold tea in the summer. I bought a set of two, as shown in the first photo, but I haven't used them. I'm also selling low old-fashioned glasses. Used only a few times, in beautiful condition. Height: approx. 13cm x Diameter: approx. 8.5cm. If you'd like to purchase the set, I'll send it for 9000 yen.