Heat rises — the air around your head is the hottest in the room. 8 mm of wool felt insulates your head so the heat works on your body instead of your scalp. You stay in longer, your hair is protected, and your ears stop staging protests.

100% natural sheep's wool felt, 8 mm thick, hand-finished with a rolled brim and a loop for hanging. No synthetics, no blends, no plastic.

One size fits 54–61 cm comfortably — that covers almost everyone. The felt also relaxes slightly with use and molds to you. If it truly doesn't fit, the 60-day guarantee has your back.

Mostly: air it after sessions. Occasionally: rinse by hand in cool water and dry flat. Never machine wash or tumble dry. Full guide on our care page.

Worldwide. Orders ship within 2–3 business days. Typical delivery: EU 5–10 days, US 7–14 days, rest of world 10–20 days — tracked the whole way, with free shipping on orders over $75.

Our goal is no surprises: where supported we collect taxes at checkout so the courier doesn't ambush you at the door. If a local fee ever does apply, it's noted clearly before you pay.

Yes — the Kova Gift Set arrives gift-wrapped in a kraft box with a cream ribbon and a ritual card, and no prices anywhere inside.

If the hat doesn't make your sauna sessions better, you have 60 days to tell us and get a full refund. No forms in triplicate, no sad letters required.

Email us with your order number. For most orders we refund or replace without asking you to mail anything back — wool is hygiene-sensitive and return shipping often costs more than the hat. Defects: send a photo, we make it right immediately.