This is a large mug that holds a lot. The vibrant blue color reminiscent of Van Gogh is lovely. Approximate size: Diameter: about 9.5cm x Height: about 10.5cm It looks like it can hold about 400ml. Because of the gold trim design, I don't think it can be used in the microwave. Instant purchase is of course OK. I will carefully pack and ship it using recycled materials. Please note that I may change the shipping method from Yu-Yu Mercari Delivery to Raku-Raku Mercari Delivery.