Magna-Tiles are a fun way to encourage your child's imaginative play and creativity. Designed for ages 3 years and older, this creative 3D magnetic building tile set is a great way for kids to practice and develop critical developmental skills through play. The Magna-Tiles Solid Colors 48-Piece Deluxe Set includes 12 small squares, 3 large squares, 9 equilateral triangles, 10 right triangles, 6 isosceles triangles, 1 wheeled chassis, 2 imagination pieces, 2 equilateral triangles (hole punched), 1 arch, 1 square door frame, and 1 magnetic hinged door. These tiles are opaque and brightly colored. All sets and styles are compatible with each other.