"【More powerful magnetism and new design】All 61 pieces have magnet. ) for higher magnetic power, to build stronger projects easier and faster and won't collapse. New lines designed to prevent scratches, maintain long-lasting bright color and smooth surface. Safe and Durable: Made of imported ABS plastic and safe magnet material. Smooth surface and round edge design won't scratch or hurt your hands. Ultrasonic welding process is used to ensure better tightness, rivets on the edges for double protection, and the magnet will not fall off easily; Durable for long time use. LEARN WHILE PLAYING - Children will spend hours playing with these magnetic tiles. Good for developing children's visual recognition of shape and color, their creativity and imagination, as well as practical and design skills. Perfect for preschool STEM toys. PERFECT GIFT FOR ANY OCCASION - Perfect to use in family, nursery school, kindergarten, preschool, elementary school, etc. Any 3 year old will love it. Because this set of magnets will keep children entertained for hours."