Each of the puzzles is printed with a different pattern on the reverse side, so the puzzles can be sorted before assembly. Bestselling puzzle brand worldwide - With over 1 billion puzzles sold, our children's jigsaw puzzles make ideal gifts for boys and great gifts for girls. Our 3 x 49 piece kids puzzle are crafted with premium quality and measure 17.8 x 17.8cm when complete. Great puzzles for Children 5 years old and up.