Someone asked him if being naked would be required, and he said “it is not about getting naked. It’s about experiencing different kind of sauna. And, if you knew anything about it, wetness level inside Bania or Steam one is around 90%. So, towel is extremely wet after few seconds. So, you can still do it, but it may result with fungal infection. Also, based on recommendation from Polskie Towarzystwo Saunowe [the “Polish Sauna Society”], you should be naked in Bania or Steam and with or without towel in dry one :)”