Albert Einstein's Blackboard Coffee Mug

Pour a mug of your favourite drink as you think! Sketch a plan, work out a formula, write a message on Einstein's Blackboard for your lab mate or your roommate. As soon as you open the box you can create an equation because there's chalk right inside, This is a mug that will give you ideas… so go ahead and make your mark, Genius! (And don't forget to show your work.). 

Description Size approx 9.5 x 9.5 x 8.9 cm. Heat changing cups are microwave safe, but not dishwasher safe. Hand wash only. Don't soak. 12 oz. ceramic mug, Comes in a colourful box.