Imagine being able to build castles; princess's towers; cars; boats, and houses with tunnels to crawl through, well now you can with Giant Polydron XL Set 2. Children will be able to build large constructions, whilst all the time learning about shape, 2 and 3 dimensional objects, texture, team-work and role play using this Giant Polydron XL Set 2. They will work together to put their ideas into reality. Giant Polydron XL Set 2 is 4 times the size of Giant Polydron and they fit together perfectly. All the accessories for Giant Polydron: Clip-in Write-on/Wipe off Panels, Mirrors, and Windows and the Giant Cogs can be used with XL Polydron.