Your pores are fully open in the sauna. What your hat is made of matters more than most brands want you to know. A maker with 15 years of hand-felting explains why undyed wool is the only material that makes sense — for infrared sauna, contrast therapy, and cold plunge.

Undyed wool sauna hats are a traditional wellness essential for sauna and cold plunge rituals. Learn how organic, lanolin-rich wool supports heat balance, scalp comfort, and calmer, longer sessions.