The RaceVest allows time triallists to maintain their aero position and not cover all-important sponsorship logos.
It received UCI approval for time trial events in 1998, but has been out of production since 2001.
It was a great product, but one with a very small market," said Sky George.
"As CamelBak grew in the recreational and military categories, the RaceVest fell off the back. I had no idea that Bobby still had his, or that he would use it in the Tour. I watch the Tour every morning. Needless to say, I almost fell off my chair when I saw Julich.
Will the RaceVest make it back to CamelBak production?
That would mean there were enough time trial riders to support the line, said George.
As a race fan, that would make me very happy.