Im the one you want to talk to about THAT!
Both of those companies offer convex styles of colostomy bags but they only helped me out a little bit.
My stoma had hardly any tissue projecting at all and due to a 100 lb weight loss and 2 c sections when I was 30 I have folds of skin which set my stoma back at least a half inch.
It caused my body to constantly try to heal my stoma and even after a revision it would shrink down to 6 centimeters. Then I would tear if I had a firm movement.
They were trying to make my innie an outie I'm told when I was in hospital before I regained consciousness I'm told but in the long run Igor my reversal in 10 months because of it.
They also sell barrier rings to help. One kind I tried was oval and thick and reminded me of a pair of lips. There was nothing I could insert along the edges that the poo didn't push outward and leave my skin exposed. That particular ring actually folded together and sealed off my bag opening when I sat up from the heat of my body.
The first best thing was an ostomy belt that held the bag against my body. Then I used barrier ringsto tear in pieces to fill the gaps from the folds to make a flat surface to attach the bag.
My nurse wanted me to cut the hole as small as my stoma but that left too much room so I cut it larger.
I tried some 4x4 adhesive square that I cut the hole out of but that didn't help.
What I tried to do was keep my stool consistent enough to try to direct it into the bag but I was constantly handling the bag and checking.
So...it was terrible! I often changed bags 3x a day my skin was always raw and bleeding. I often got pancakes stools behind the barrier filling up the gaps.
I just worked to protect my skin. I used a spray adhesive remover to cut down on tearing and I used the crusting method to make a barrier from pooh
Im sorry to be so negative and I hope you have better luck. If I had to do it over I would learn more about irrigation. It was impossible to keep my stool constant and after it had pounded against the bag I was impacted enuf to take measures to for relief.
Yes I had a tough time but I knew it had saved my life. I would still be managing because you do what you have to. I still don't leave the house much and have limited activities but I do my bitching here and try to smile when I can.
Poor, poor pitiful me! NOT!