Brighten up your fun time with the Plus Plus Puzzle By Number 500-Piece Rainbow Puzzle. Plus Plus changes the jigsaw puzzle experience with a paint-by-number design, allowing you to put each piece perfectly in place and create a beautiful rainbow that you can hang up or display flat. Plus Plus makes every puzzle in its zero-plastic-waste factory in Denmark using renewable energy. Manufactured from low-density polyethylene, Plus Plus puzzles are free from BPA and phthalates.