The Green Toys Block Set is the world's most environmentally friendly basic building set -- and now it's better than ever! The 18 boldly coloured, lightweight blocks have been re-engineered for easier grip and better stacking action. This unique block set includes a variety of shapes for building castles, towers, or any imaginative structure budding architects can dream up. Safe, non-toxic; contains no BPA, PVC, phthalates or external coatings. Dishwasher safe for easy cleaning. Guaranteed to produce hours of Good Green Fun!