Autobots, roll out! It's time to put on the Transformers Prime Optimus Prime Mission Helmet and blast off for adventure! This robotic piece of headgear fits most kids and it's packed with fun details from the hit TV series Transformers Prime. Transform into the Autobot hero when you put yours on, and take on the Decepticon menace today! Requires and includes 3 x "AAA" batteries. This helmet measures approximately 11-inches tall x 8-inches wide. Ages 5 and up.