This 65/108/120/240-piece magnetic tile set features ramps, curves, tunnels, and alphabet stickers made from toxin-free Abs plastic with soft-edge design. The transparent marble run tiles help children develop hand-eye coordination, color recognition, counting, sorting, and Stem skills through creative building. Easy connectivity allows frustration-free construction of various shapes and structures. Suitable for ages 3-8 with parent supervision recommended for younger children. weight: 2.86 pounds.