This is a set of a Microsoft Surface stainless steel mug and a double-walled tumbler with a lid. Please note that the tumbler is made of plastic and is not a Microsoft Surface product. The double-wall construction prevents condensation, and the lid makes it suitable for use in a car. Sizes: 《Mug》 Diameter: Approximately 8.5 cm x Height: 10 cm 《Tumbler》 (measured on the outside) Maximum Diameter: 7.5 cm x Height: 14.5 cm Bottom Diameter: Approximately 6 cm Measurements are taken at home, so there may be some error. The mug is thick, so the inner diameter is smaller. It's difficult to measure, so the exact inner diameter is unknown. The items have been washed with water before listing. The inner diameter of the tumbler is approximately 6.4 cm when the inner part is removed. The depth is difficult to measure accurately. The mug is unused, so the sticker on the bottom is still attached. The tumbler is unused and has been stored at home in its original bag. Neither item has been used, but the mug has been stored at home after being taken out of its box, so it is listed as "Like New." Please understand that these are not new items before considering a purchase. Thank you for looking.