The puzzle pieces are created from 5mm clear acrylic. The image is printed onto the back giving the puzzle piece a depth and a high gloss finish. You can keep on adding to your puzzle and growing your wall of memories throughout the years with pictures, designs or words. We have two sizes to start with, but currently you can not mix the different sizes together. Each puzzle piece is supplied with dual lock adhesive tape for easy, no mess installation. Your files can be uploaded to us and also we can deliver your order back.