Great idea to actually test the effectiveness of thr Matador case. What was the local humidity when testing? Was the area air conditioned?

Zip locks are so unreliable. Fine for a weekend, but they eventually fail. Carrying a spare helps. A simple snap lid food container like a Sistema box (https://www.amazon.com/dp/B002DWAWJM) is a better alternative to a ziplock.

One method of “soap management” is to cut up a large bar into several pieces, using one at a time. That helps with the Matador case and ending up with one big soggy bar regardless of the storage method. Here is a place where I feel okay using a ziplock as it won’t be opened/closed often and the contents aren’t leaky stuff.