The funnel works great for pouring wine into a decanter, the screen effectively strains sediment build-up in older wines or cork if you happen to have the unfortunate luck of getting a bottle with a dry cork that breaks on you. The screen comes out of the funnel very easilly to clean as well. One thing I would note is that the spout does not fit into a bottle opening (as oppose to the decanter opening) if you want to pour the wine back into the bottle (for whatever reason).