Roll Cage

The Roll Cage is a headwear item in Portal 2. The Roll Cage was a promotional item rewarded to players who had preordered Portal 2 through Gamestop.

Bugs
Currently, the only way to display this item in-game is to have nothing equipped in its respective loadout slot. It was stated by Valve on April 22, 2011, that they were "working to correct this and make the DLC appear as an item just like other skins, hats, etc. in your backpack." As of 2019, this correction has not been issued and the only way to display the item remains the same.