A Mustard Seed Toys Magnetic Tiles, 20 Piece Magnets are easy for younger kids (3+) and older siblings; rare-earth magnets make these tiles position themselves! Magnetic tiles stick together for easy cleanup, compact storage, and are less likely to clutter your home Kids learn color and shape recognition, building, coordination, patterns, and magnetism Excellent value, enjoy blocks for years as you add sets and structures get larger (compatible with Magformers) No more Lego museums, these magnetic sets are fun to knock down and rebuild again!