This topic is all about finding the right one-piece colostomy bags that last longer, especially when dealing with a parastomal hernia. The person sharing their experience is relatively new to using ostomy bags and is looking for advice on how to prevent leaks and extend wear time. Here are some helpful suggestions and insights:

1. The person currently uses Hollister flat bags and can get about four to five days of wear. They are curious if this is the best they can achieve.

2. Hollister does offer one-piece convex options that might help:
- Soft convex #8958, which can last five to six days.
- Convex #82711, for which you can request free samples. Customer service can assist in finding the right size.
- Some users report getting four days of wear even with a hernia.

3. If the hernia is affecting the seal, consider using convexity or added support:
- Soft (flexible) convex options are often more comfortable than hard convex while providing similar protection.
- Deep convex one-piece products like Coloplast Sensura Mio Deep Convex are designed for uneven tummies and hernias.
- Coloplast Sensura Mio Click two-piece convex is also recommended for non-flat abdomens, with some users having success for three years.

4. To extend wear time and prevent edge lift, consider reinforcement products:
- Convex rings such as Coloplast Brava rings.
- Brava Elastic Barrier Strips, Y-shaped #120721, can be placed under or around the wafer.
- CeraPlus Hollister barrier extenders #79402.
- Sure Seals over the flange for extra waterproofing.

5. It's important to sample widely, as the "best" option is individual. Requesting samples from Hollister and Coloplast can help find the right convex depth and adhesive.

6. Additional aids include Safe n Simple Unscented Ostomy Pouch Deodorant, which is noted as "life-changing" for odor control.

7. Some users prefer cloth/tape-edged wafers available from Hollister for added comfort.

8. Regular wear time targets of four to five days are common, but with the right convexity and barrier support, it might be possible to extend this.