Expand your SmartMax creations and your creativity with this Smartmax 6 curved bars extension set! SmartMax enables young children to explore magnetism safely, with strong, oversized pieces that are specifically designed for handling by younger kids. This set includes 3 cold coloured curved bars (green, blue and purple) that attract to all warm coloured SmartMax bars (red, orange and yellow). Suitable for little hands from ages 1 years old and above.