These MasterPieces 15″ x 21″ 500pc Rainbow Sauce puzzles feature brightly colorful images of fun! Try not to get hypnotized by this mesmerizing rainbow swirl puzzle! Vibrant colors spiral out from a single central point, shifting hues smoothly from one to the next. Abstract puzzles make for a soothing new puzzling experience. Which color is your favorite? To reduce their impact on our environment, the chipboard used in these puzzles is made of recycled material.