"All Jigsaw Puzzles" JigRoll Mat for Unfinished / In Progress Jigsaws

I don't know how many pieces the mat can hold, however, the box implies that there is a 500 piece jigsaw included with the mat as well. The box has never been opened, as can be seen from the photos, though the box itself is a little worn with age and storage, again as can be seen.

eBay