With the Math Mug, you can study the world’s greatest equations while you enjoy a hot cup of joe! Designed to look like they are written on a chalkboard, each formula is identified by name on the mug. This 14oz ceramic cup has a comfortable handle and comes in a beautiful box making it the perfect present. Perfect for problem solvers or anyone who likes a cup of coffee and a slice of pi. Microwave and dishwasher safe. Click the store link near the product title for more smart and funny stuff from The Unemployed Philosophers Guild.