If you are a fan of jigsaw puzzles or looking for a learning toy that helps in cognitive development or just up for some challenge, you will love our 3D Crystal Puzzles. 3D Crystal Puzzle is made from high quality acrylic plastic. These puzzle pieces interlocks with each other to form a three dimensional model. Assembling of these puzzle pieces are fun, fulfilling and yet challenging. 3D Crystal Puzzles is also an educational toy that helps adults and kids to develop spatial skills, perseverance, patience and logical thinking. Truly an amazing quality educational toy! Available in several sizes, number of pieces per set and different designs from copyright characters to animals to objects. These jigsaw puzzle 3D Crystal Puzzles make great gifts for your loved ones or simply display your masterpieces at your favourite space or working desk! 3D Crystal Puzzle London Bus has 53 jigsaw puzzle pieces. Actual Size of Assembled London Bus measures 115 x 55 x 28 mm Age appropriate for 10 years old and up.