The buff polor hat the microfibre and polar hat buff is a double layer hat one with microfibre outside and inside with a soft polar fleece ideal for people who are looking for a warm and soft hat for winter activities in low medium intensity like boulder climbing trekking hiking or skiing buff polor hat featurs 100 polyester comfort fit weighs 40g offers excellent breathability and humidity control treated with polygiene your buff headwear will remain fresh as the silve