Our Tangle Puzzle is made of plastic.The size perimeter is 6.7"L. It's a puzzle that transforms into endless shapes and makes a great stress reliever. You can engage minds of all ages by simply pad printing your company name or logo to this item. Please note due to this product can be twisted into different shapes, so the imprinted part is not fixed, such as it could be in the first line or the second or third line. Make this a party favor or your next giveaway at a tradeshow to get people to enjoy your business! Choking hazards-small parts. Not for children 12 and under.