I chose a sample of the convatec yesterday it is a sticker on a sticker and I believe it's a one piece because I can't change the bag after I put it on. It's a moldable one and I'm really interested in these until my stoma has settled on its size.
I love the idea of being able to change the bag itself without having to change the barrier. However I made it a habit to take a water bottle and just clean the bag after I empty (husband's idea).
I noticed that the convatec barrier comes off after I shower but with Hollister I'm able to shower and keep the barrier on. Yesterday I showered without a bag (between changes) and it messed up my shower drain