These Building Block Base Plates are to use with the Creative Building Blocks in a Bag from Hope Education. Now you can design structures erect buildings build bridges create models all on a sturdy base.Pack contains:1 Blue Square - Size: 25.5 x 25.5cm1 Grey Square - Size: 40 x 40cm1 x Green - Rectangle: S 51 x 25.5cm Age Suitability: 3 Years+