This discussion is about finding the right ostomy appliance, specifically focusing on the Convatec Esteem Flex One-Piece Soft Convex pouch. The original poster is experiencing shorter wear times with their current Coloplast SenSura Mio two-piece system and is looking for feedback on alternatives. They are also curious if using an ostomy belt might help extend the wear time.

Here are some insights and advice shared by others:

1. Users have mixed experiences with the Convatec Esteem Flex One-Piece Soft Convex pouch. It is generally considered comfortable and suitable for larger or oval stomas. However, some find the pouch tail difficult to manage, describing it as flimsy and messy by the end of the week.

2. For Convatec two-piece systems, the netted flange material is praised for its comfort and adherence. It is easy to release gas when filters clog, although the filters tend to fail quickly. The drainable end is still seen as flimsy and messy.

3. Coloplast options, such as the SenSura and Assura one-piece pouches, are noted for their flexibility compared to the SenSura Mio. Users report varying wear times:
- Some change every 5 days without a belt, even with high-liquid output.
- Others average 10 days, with a personal best of 18 days before leakage.
- The SenSura Mio Click coupling is criticized for being difficult to manage, prompting some to switch to the adhesive two-piece option.

4. Regarding accessory use and support garments:
- Most users do not use an ostomy belt, and there is no clear evidence that it extends wear time.
- Supportive ostomy underwear with an internal pouch liner is recommended for stability, especially for those with high output.
- Convex wafers and barrier rings are crucial for some users, helping them achieve up to 5 days of wear.

5. General tips include:
- Contacting manufacturers like Convatec and Coloplast for free samples when performance changes or issues arise.
- Experimenting with different combinations of products (one-piece vs. two-piece, adhesive vs. mechanical coupling, convexity, barrier rings) to find the best fit for your current skin and stoma conditions.