New, unopened box, this is a 2021 Advent Calendar from Lego. It's the City version.  One side of the box lays down and becomes a play surface, each day a window is opened and another portion of the set is added. It's for 5+. 60303. 349 pieces, 24 gifts. The box is 15" x 10 1/4" x 3".

buyer to pay shipping of $12.00