This is a set of two Bruno mugs. I washed them with water once, but they were larger than I expected, so I'm putting them up for sale. Basically, they are unused. The colors are blue-gray and warm gray. Please do not ask to buy them separately. Product name: Vacuum double-walled mug Actual capacity: 0.46L Heat retention: 73°C or higher (1 hour), 35°C or higher (6 hours) Cold retention: 7°C or lower (1 hour), 13°C or lower (6 hours) Included: Box, instruction manual