No glue required. This puzzle made of high quality plastic jigsaw puzzle. The finished puzzle measures 31 x 21 x 7 cm when complete. It is suitable for ages 10 years and up. This puzzle uses unique plastic pieces, which slot together to build this sturdy and strong model. No glue required! Each puzzle piece is printed with a number on the reverse side, so you can either assemble the puzzle by eye, or just by following the numbers. Safety Warning: Not suitable for children under 36 months due to small parts which pose a choking hazard.