Amazonが全木材製のSauna (Backyard Barrel Sauna)を売り出しています。
Looking for an easy way to get your sweat on? Duck into a sauna. In addition to being an excellent way to unwind after a long day, saunas are found to lower your cholesterol, alleviate sore muscles, and even help prevent dementia and Alzheimer's.
Chances are, you only use the sauna when you're treating yourself to a deep-tissue massage or have some extra time at the gym. But if you want to increase your sauna time, you can always get one for your home.