The arms are my issue with the DCS Guide jacket. I'm not popeye but it is difficult to layer under. Body is fine but the arms are relatively thin. I've tried layering the Kuiu Super Down under it (with a Patagonia silk weight capilene layer) and it is compressed. I also tried layering the Super Down under a Mountain Hardware wind stopper jacket and it worked better as a result of not being compressed at all. In fact, it worked so well I'm looking for something like that Mtn Hardware jacket but with a hoodie. The hoodie of the Guide jacket was nice vs. beanie with Mtn Hardware. Temps are 10deg and very windy.