The problem with magnetic tiles on a plane is not the tiles, it is the tray table. Pieces slide, then they fall, then they are under the seat in front. PicassoTiles answered that by shrinking the tiles and packing all forty into one flat case small enough to live in a bag pocket, so the set that comes out at the gate is the set that goes back in.

Forty nano pieces come in the case, 32 triangles in a range of sizes and 8 squares, which is a triangle-heavy mix chosen for height rather than footprint. PicassoTiles publishes a package size of 7.6 by 4.8 by 1.2 inches for this item, smaller than most paperbacks. One thing to know before you order, because PicassoTiles prints it on its own packaging graphic: this item is a Random Box Shipment. It arrives as Version 1, a hinged metal tin, OR as Version 2, a translucent plastic case in a printed sleeve, and the maker states the packaging design may vary. The forty tiles are the same either way. The container is not, so nothing here is sold on the lid being a play surface, and we cannot tell you in advance which one will arrive.

These are nano tiles and they are compatible with full-size PicassoTiles sets, which means what gets built in a restaurant can be carried into the tower on the playroom floor at home. PicassoTiles states the set is BPA free and non toxic with smooth edges for safe worry-free play, and gives a suggested age of 3 and up.