Playmags 164 28 Piece Dome Set: Now with Stronger Magnets, Sturdy, Super Durable with Vivid Clear Color Tiles. Suitable for all ages (3 & up) by one party or in groups a great way to spend quality time with the family and loved ones. Compatible with all other brands. Each block has rivets and lattice to strengthen the quality of the tiles. Set includes 3 different shapes that can combine to unlimited imaginations, and as a great add on to any other set. Includes - 12 - 1/6 Dome, 12 - Windows, 4 - Half Hexagon Encourage creativity which is the key factor to success in today's ever changing environment.