The first hat I purchased was replaced by the company. They were fast and responsive. The wool fabric looked mixed inside the hat. I questioned that. Only to learn that’s how wool should look. I can honestly say that this is a good solid sauna hat. I’ve worn it into the infrared sauna twice a week for the last 3 weeks. It’s held up exceedingly well and kept my head at an even temperature. It keeps my hair from drying out at 150 degree heat. It keeps my hair dry. There are a few sweat drops that drop on my face from the hairline which is normal But The full head is dry. The hat is quick to put on, stays dry in the sauna and when I leave the sauna. No more soggy hair. The hat is very well made and holds up well. It’s also very light on your head. Looks like it will last for a long time. If I ever have to replace the hat, I will purchase the same brand. Love my sauna hat.