Topic Explanation:
The forum topic is about a person looking for information on where to find ostomy supplies, specifically Hollister products, and waterproofing products in Cancun. The person also seeks information on a product that aids in waterproofing the ostomy appliance for swimming.

Relevant Advice and Insights:
- Hollister has a distributor in Guadalajara, Mexico, with contact details provided.
- Sure Seal rings are recommended for waterproofing the ostomy appliance during swimming and showering.
- Nex-Care tape made by 3M is suggested for waterproofing the wafer, as it is 100% waterproof and flexible.
- Sure Seal rings are highly endorsed for swimming and showering, as they stay on for an extended period.
- Contacting Hollister directly for information and assistance is recommended.
- A forum member found an outlet store for ostomy supplies in Cancun and shared the contact numbers for Hollister in Mexico.
- A member shared their experience of obtaining ostomy supplies in Mexico and provided contact information for Hollister.

Conclusion:
The forum discussion provided valuable information on locating ostomy supplies and waterproofing products in Cancun, including specific product recommendations and contact details for Hollister in Mexico.