Our astronauts have just returned from Pluto with this drum of Ice Blue and White Alien Slime! Is Pluto, the tenth planet from the sun really this blue and white color? Pluto is very cold and made of a mysterious stuff. Our Pluto Putty is a semi-firm plastic with a glacier-like mix of white and blue. Open up the ice-shaped white lid to pour and play with this wonderfully weird substance. You just can’t stop playing with it!