Warm, wind resistant, packable - Montane Prism Hat

In the winter and shoulder seasons, I struggled with getting the right combination of stuff on my head to keep out cold, block the sun, and vent excess heat. I use this hat in combination with an earband, a super lightweight visor, and a balaclava if it's really really cold. This hat alone is perfect for frigid early starts. Hat + visor for when the sun comes out, and visor + earband when I'm doing an aggressive ascent. Unlike other hats I've had, this packs down tiny so I can pull it on and off as needed with climbs and breaks and just stuff it in a pocket instead of having to remove my pack to stow it. Also small enough it can live in my pack all summer for unexpected summit storms.

Build quality is excellent.

I have a medium head in women's helmets. This fits great.