This is a set of 10 wine glass-shaped cups in a vibrant red color. They have an elegant, glossy surface that resembles lacquerware. They feel gentle on the lips and aren't hot to the touch. Unlike ceramic or glass, they are lightweight and unbreakable. They can be used with peace of mind by people of all ages. The material of the coating and the body fabric are unknown. They are unbreakable, so they are probably made of resin. They are a comfortable size to hold and easy to use for guests. I purchased a set of 10 for guests at home, but I ended up using other cups, so these have been stored unused. They are unused and still in the original box from when they were purchased. They have been stored for a long time, and I have not inspected all of them, so there may be some unnoticed scratches. Please consider purchasing if you understand that these are long-term storage items. The diameter is approximately 6.5cm, and the height is approximately 14cm. Thank you for looking.