【SAFE MATERIAL & FRIENDLY DESIGN】For children toys, safty comes first. Our three-dimensional magnetic buliding toy are made of Non-Toxic,high-quality ABS plastic. Round edge design keep your kids safe from hurt. Using ultrasonic welding process to ensure better tightness magnet won't easily fall out, durable for long-term use.（Please check the size of our products carefully, please confirm that you can accept its size）. 【IDEA BOOKLET 】-These Magnet parts with an idea booklet,which can help kids creat kinds of 2D plane shapes or stereoscopic geometric structures,such as castle，animals,houses,cars,planes and more.Comes with a storage bag, it is easy to store the parts and take it to everywhere. 【VARIOUS ACCESSORIES,MORE FUN】-This STEM magnetic castle toys development set 131 pieces(99 PCS of magnetic accessories), include 38* Square, 36* Triangle, 4*Isosceles Triangle, 2*Hexagon, 16*Semi-Circle,2*Arched,1*Rectangle,.And 2*Wheel, 20*Castle Plastic Card, 1 *Windmill accessories, 2 wheels，1* Color manual with many reference models. 【STRONGER & POWERFUL MAGNETISM】-The magnetic building parts are built with stronger and bigger magnet for more powerful magnetism, easier and quicker to build projects and won't easily collapse.These magnetic toys make an ideal gift for boys and girls ,birthdays, parties, Christmas gift ideas. 【BUILDING YOUR FAIRYTALE CASTLE】- Every child has a fairy tale world, and the girl dreams that she is a little princess and the boy plays the prince. Building a fairy tale world begins with building a castle.With power magnetic tiles and vibrant rainbow colors, these magnetic building parts can easily connect to DIY building models as children like.