Claycrete is perfect for light-weight modeling projects; when mixed with water, Claycrete starts to set in about 30 minutes. It will not stick to hands or tools during the modeling process and it remains exceptionally white when dried at room temperature, creating the perfect surface to apply vibrant colors, patterns and textures!Details:Dries white1 lb. (454 g) weightFinished projects are very lightweightOne pound of Claycrete will make 97.5 cubic inchesNontoxic