For those of you who have a colostomy and use a pouch, these liners are an absolute must!! I can't praise them enough. No more dirty pouches which means that a pouch will last for months. I use 3 of them that I keep rotating so while wearing one, then I wash out the one I just removed just to keep it fresh. Not having to buy flanges, will save you tons of money plus so you know, these liners are very cheap. I pay $18.00 for 100. Do yourself a favor and try them. You will be very happy.