This topic is about dealing with the challenges of using skin barrier sheets in hot and humid weather. The main issue is that these sheets tend to lose their stickiness in such conditions, making them less effective. However, spray or wipe-on skin-prep barriers seem to hold up better and can even help the flange stick more securely.

Here are some helpful insights and advice from the discussion:

1. The specific skin barrier sheet mentioned is the Hollister Skin Barrier Sheet #8900, which usually provides a light and secure fit but struggles with adhesion in heat and humidity.

2. The current appliance setup includes a Hollister drainable opaque pouch #18183 with a matching flange #12403.

3. The poster has only used Hollister products and hasn't tried other brands.

4. Many people find that sheet-type skin barriers can feel heavy and thick, sometimes giving the impression that the appliance might fall off.

5. Some users prefer to use sheets only temporarily, such as to give their skin a break, due to the bulk and weight.

6. If you're experiencing issues with Hollister sheets in the heat, consider:
- Switching to wipe-on or spray-on skin-prep barriers, which many users find improve flange adhesion in hot weather.
- Requesting free samples from other manufacturers to compare how well they stick, their weight, and comfort in warm conditions.

7. While specific brands weren't mentioned, it's recommended to call the customer-care lines of different companies to request trial products.