Rubies 5-6 Years Transformers Optimus Prime Dress Up Costume

What you're getting

Let your child become Optimus Prime with this Rubies costume. You get a jumpsuit and mask that'll nail the iconic look of the Transformers leader, whether they're heading to Halloween, a themed party, or just want to play out their hero fantasies.

It's officially licensed, so you know you're getting the real deal. Sized for 5–6 year olds, though do check the images for the full size guide. Works a treat for World Book Week too, if you're after something that fits the brief.