Perk yourself up with a cup of C₈H ₁₀N₄0₂ yes, coffee! Chemically brilliant! This laboratory inspired mug is etched with markings in homage to the wonderful world of science! If you're a geek, then this is the mug for you. It's dishwasher safe and holds a hefty 400ml of favourite cuppa. On the one side of the mug it features the chemical structure of caffeine, and the other side it has volume markings all the way up to 400mls.