Arita-yaki (Arita porcelain) from Ninsai Kiln, a set of 5 teacups. Size: Diameter: Approximately 8cm Height: Approximately 6cm I've only used them a few times since I bought them, and they've been stored at home since then. I haven't had many opportunities to use them, so I hope someone else will. I will wash them thoroughly and pack them carefully before sending them.