Hi Rick:

Anorak I’m wearing is from nylon. It was sewn myself from brake parachute of military flying-machine. Such anorak is very light, breathing and snow strew down from this texture and moreover it quickly dry and it is not hot in summer. For my opinion membrane texture don’t work on frost. Of course we wear warm clothes from fleece or polartek under anorak and need to take down jacket for camping works.