He is dressed to drive, and he knows it. A soft sage flat cap, an ochre satin bow tie, an argyle vest patterned in teal on cream, a mustard checked shirt showing at the sleeves, and long charcoal trousers, with a pale tail trailing behind him. There is more pattern on this one mouse than on most of the family put together.

He is Little brother size, 10 cm (3.94 in) tall, one step up from the baby mice and a step below Big Brother and Big Sister, so he shares clothes and furniture with the other Little mice. Maileg says he is drawn to fit the Maileg mouse car. That car is a separate Maileg product and is not included here. What comes with him is the printed card car box in the next paragraph, and that box is his.

Cotton, filled with recycled polyester and PE pellets. Maileg packs him in a box built as a small car, mint green below and kraft above, and he sits in it looking out of the window, so the box goes on being useful long after the wrapping is gone.

The Little Brother Mouse in Matchbox is the same size in his sleeping clothes.