Our 2 Person Sauna Diaries Table of ContentsAll About 2 Person SaunaSome Known Facts About 2 Person Sauna.It takes around 10 minutes to preheat and you'll need a heatproof surface to push. Once it goes to your desired temperature level, you hop in and establish a timer for as lengthy as you want to continue to be in the blanket. Infrared71"L x 71