I gave them both to friends. ? I can say that my feet don?t sweat in them, but I?ve yet to find any sort of built-in, micro-air conditioner, either. Again, both are still very comfortable, and I still have the pleather pads as backups. I used this after cleaning with their beard wash. Ive been wearing these slippers for about 2 weeks now and I really like them. Now I wonder how I lived without it. In fact it even came with one of those glass screen protectors on it. (Disclaimer: This is not a much a review as it is advice for avoiding getting ripped off. My first pair that I bought 5 years ago- still awesome. They were gorgeous out of the package but thats it.