The Magna-Tiles Clear Colors 8 Piece Rectangles Expansion Set is full of creative possibilities. Build big by adding an extension set to your collection of Magna-Tiles. Kids can learn about shapes and patterns, measurement, magnetism and simple physics, teamwork and problem solving. Set contains 4 Large Squares and 4 Rectangles. Ages 3 & up. Imported. Warning: Small parts, choking hazard, not for children under 3. This product contains small magnets, which, if ingested can stick together across intestines causing serious infections and death. Seek immediate medical attention if magnets are swallowed or inhaled.