Light , very breathable insulated pullover.

Verified Buyer Reviewed by Montanaskiandsail from Montana Mountians on Wednesday, March 2, 2016
This jacket / shirt is made with Polar tech Alpha. with a light nylon shell. It definitely is more breathable than down or primaloft as far as I can tell.
It Is roughly comparable to a thick fleece for warmth (200 weight) but blocks the wind and light precipitation better and is thinner, lighter, and more compressible. I have worn this a lot and it just does not get clammy inside when you build up some body heat or wear under a breathable outer layer / shell like Event or Dry Q evap. I used it as a base layer in my down bag winter camping and was surprised how breathable it was.

The fit was too snug in the shoulders for me in a medium, (I am 5.10 175 lbs.) would be five stars if it had some stretch panels and possibly underarm venting or lighter arm pit fabric.
Previous Review “Nice alternative to a fleece pullover”