The design on the mug is on both sides. The lids have a rubber rim to stop leaks as well as a swivel top which allows you to close/open the drinking hole. The lid design also features a small lip which makes it easy to remove. Ideal for people who are constantly on the move, as they also fit nicely into car/van beverage holders. Approx. Measurements: 15cm x 8.5cm. Comes within a box.