Metro Mags Clear Colors 133 Piece Set 133-piece set of multi-colored, geometric magnetic building tiles with project guide Extra-large set includes four new shapes, a 12 by 12-inch platform, 16 wheels, and two new colors Magnetic tiles adhere on all sides for infinite 2D and 3D building possibilities Develops spatial awareness and problem-solving, logical thinking, and math reasoning Recommended for children from 3 and up; hours of fun for children and adults Magnetic Tiles Building Set