If you've ever needed some motivation to turn lights off when you leave a room then here it is: the stern but kindly face of Optimus Prime to remind you that Energon is too valuable to waste.

Our inspired Transformers Conserve Energon Mug Mug is a specially designed piece, only available on our site.

Developed for us, this product includes a bold print on a stylish mug.

Each and every one of our mugs make thoughtful presents for a range of hot drinks. Represent your unique personality with every use.

• Made from Ceramic
• Microwaveable
• Dishwasher Friendly
• Can hold 11oz
• UK Made

The generation-spanning Transformers series has grown to a global household name. The war between the Autobots and the Decepticons rages on, as they battle it out for control of their worlds.