These hats are made of qiviut (musk ox wool), yak wool, bison wool, alpaca and merino.
They are the warmest I’ve found:
- 100% Qiviut Beanie by Qiviuk — $260 USD
- 80% Yak Wool Beanie by Khunu — £65 — $84 USD
- 100% Yak Wool Beanie by Kora — 230 g/m2 — $45 USD
- 100% Yak Wool Beanie by Yakamel — double layer — $38 USD
- 100% Yak Down Beanie by Handcombed — $51
- 100% Yak Wool Beanie by Mahogany Cashmere — $78
- 90% Bison Down Beanie by Buffalo Gold — 90% bison down, 10% nylon – $85
- 100% Alpaca Beanie by Woop!Wear – $25
- 100% Cashmere 3-Ply Beanie by Fishers Finery — $40
- 100% Cashmere Cable Knit Hat by Fishers Finery — $33