Quote Originally Posted by Bike Writer View Post
What is a slime tube?
Slime is a strange greenish goop that is meant to be injected into a tube (via the valve stem). If the tube gets a puncture, the goop is supposed to seal the hole. It is also possible to buy Slime branded tubes that come prefilled with the goop.

It is not clear how well it works.

On the negative side, it often creates a huge mess. Also, slime filled tubes generally cannot be patched - the slime keeps oozing out preventing a patch from sticking.