I've been eating these as part of my diet since March 2012. As of today I've lost 113 lbs. These noodles really help with that. They are pure fiber, nothing else. Everything that goes in comes out, and sine they're pure fiber, so does a lot of other things
They have no taste, but are really filling! Used in soup, or with sauces, they will just carry the flavor of what they are added to. They are really miraculous.
Here's a link. This is not an ad. You can get these at any asian market or from multiple online sources.
Konjac Foods - Pure Fiber Zero Calories Pasta