I'm an experienced 3-season backpacker looking at extending into winter. I'm going to start gently by staying in huts on multidays snowshoeing trips so all I really have to work out is clothing. For 3-season trips (daytime temperatures from about 30F – 90F), I currently use the following for tops while hiking:
– MEC lightweight Power Dry l/s crew (~5oz)
– Marmot Ion windshirt (3oz)
– Marmot Precip Jacket (12oz)
I have successfully worn the Power Dry crew and Ion down to almost freezing while on the move and still felt reasonably warm (with appropriate head and handwear). The Precip is pressed into service for rain or stiff breezes in close to freezing temperatures.
In researching snowshoe-appropriate clothing, I've looked at soft shells a bit but think I can probably just tweak my current system to work. Winter conditions around Vancouver range from cold rain (30-35F) thru wet snow (25-30F) to dry snow (0-25F) (that bottom end is a guess).
I can swap out the MEC Power Dry top for a SmartWool lightweight crew. Then add some insulation between the wool and the windshirt. Only what? Some choices would be:
– Patagonia Capilene 4 Long-Sleeved Zip-T (Power Dry according to the Polartec website) (8oz)
– MEC Expedition Stretch Zip-T (Power Dry) (11oz)
– MEC Expedition Stretch Hoodie (Power Dry) (12oz) (same as above but with a hood)
– MEC Amenity Jacket (Thermal Pro) (15oz)
The Amenity is roughly equivalent to an R2 and since the MEC Expedition stuff is so much heavier than the Cap 4, I'm guessing it's equivalent to R1. My question is which, if any, would work? Should I be looking at other tops, other fabrics? I know I don't need wind blocking or other weather-related features because my windshirt and hard shell will take care of those but are there other properties these items don't have but would be nice to have? Should I look at multiple thin layers and if so, how many of what? Is there any other changes I should make to my system to make this work (getting a more breathable hard shell is one plan – an eVent or Montbell shell is a future planned purchase)? Is a hood a good idea on a fleece layer?

