https://www.nzpopupsauna.com/
The NZ Pop-Up Sauna is a traditional dry sauna. The interior is heated using a large electric sauna stove, which works by heating up several large stones. This style of sauna is heated to temperatures between 70 and 100 degrees, but most people like it somewhere in the middle. There is no steam introduced, so the only humidity in the sauna comes from spraying small amounts of water onto the heated stones.