This unique expansion building kit offers your kids a combination of classic fun with something original. The kit with light-up building blocks is exciting not only for children but adults as well. The EXPANSION MINI LAMP set consists of 40 circular Light Stax blocks in various colours. It is an expansion set. If you wish to use the Mini Lamp, you need to use the Power Stax base from another Light Stax Classic set. In addition, Light Stax Junior is compatible with other building sets so both small and big builders can have a lot of fun with it.