From Trick or Treat Studios. Trick or Treat Studios is proud to present the officially licensed, G.I. Joe: Cobra Commander Helmet. Sculpted by Oluf Hartvigson, this wearable Cobra Commander Helmet features a magnetic removable mirrored visor and interior foam padding for comfort and excellent visibility. This amazing helmet is perfect for display or to wear while fighting the G.I. Joes! Measures approximately 12" high and 30" around the outside.