From Team Fortress Wiki
Dude, you'd get a closed casket at the ugly cemetery!
— The Scout
The Futankhamun is a miscellaneous item for the Scout. It is a set of bandages, which cover the Scout's shoes and socks in an imitation of a mummy.
This item can only be worn around Halloween or during a Full Moon; at other times of the year, it does not appear in gameplay, unless the server has Halloween mode enabled. However, it can be equipped at any time and can still be viewed on the loadout screen even when it is not visible during games.
October 27, 2011 Patch (Very Scary Halloween Special)
- The Futankhamun was added to the game.