From Team Fortress Wiki
The Tomb Wrapper is a promotional miscellaneous item for the Scout. It is a blood-stained bandage wrapped around the Scout's right upper arm.
This item was awarded in Genuine quality to players who purchased Tomb Raider on Steam before March 12th, 2013.
March 4, 2013 Patch
- The Tomb Wrapper was added to the game.
March 27, 2013 Patch
- Removed the promotion restrictions from the Tomb Wrapper
- The name and description refers to the material linen, which was used by Ancient Egyptians during the mummification of a person.