They are made of a sturdy paper material. Blank Jigsaw Puzzle is a fun way to create your own personalized puzzle. It is for weddings, showers, birthdays, invitations, and classroom or home activities. Decorating these puzzles is so much fun. You can decorate yours and with a friend to see if they can solve your puzzle. Make it as challenging or easy as you desire. Features -Color:White -Material:Paper -Size:29.00X20.00X0.60cm/11.40X7.86X0.24in - They can be used to make decoration or toy, bring more joy and fun. Increase people's hands and brain ability, but also optional hot stamping - You can give these paper puzzles as a your friends who like DIY craft, and make any shape you like or need - These puzzles are built to last. They are made of sturdy and natural paper material. - These blank puzzles allow you to draw picture and write words on them. - Printing the picture on sublimation paper with heat transfer ink, seting the temperature of the hot stamping machine to 180 degrees Celsius (360 degrees Fahrenheit) for 25-35 seconds for hot stamping. Package list: 4 x Sets of Templates