This unique assortment of 3D dinosaur card puzzles are plastic cards with punch-out pieces that build three-dimensional models. The cards are flat plastic, and you punch out the pieces and fit them together to create 3D models. The models fit together snuggly and stay together. You do not have to glue the pieces. You can take the model apart if you want to and put it back together easily. Each puzzle measures to approximately 4 inches wide.