From Icon Heroes. Icon Heroes presents the Transformers Optimus Prime X Bumblebee Retro Pin Set! Based on the vintage toy box art, each limited edition hard enamel pin is individually numbered and packaged on a retro-style 6" x 9" card back. Optimus Prime measures approximately 3 1/4" tall while Bumblebee measures approximately 2" tall. The pins and card back are packaged inside a clamshell box to keep them safe and secure when not in use. Collect them all! Limited edition of 2,000 pieces.