EX Light under a UL Down Parka?

I would say no, unless you purchase the UL Parka oversized as they are both sized pretty similarly. I've used a Ex Light under a Alpine Light however, but it (Alpine Light) is cut roomy.

That works, thanks Mike

As an aside to this topic, back in the 70's a few makers had "over-parkas"… ie, well insulated, full cut parkas that were made to be layered over lighter insulated jackets. The one I had was made by the long defunct Snow Lion… great piece of gear and very versatile.

So long way to say, your thinking is sound…!

I think it was an old article by Will R here (winter outing in Yellowstone???) that got me thinking about a two puffy jacket system. Your outer jacket has to be oversized so as not to hamper loft, but it does build in a lot of flexibility.

In "summer" Ex Light or equivalent, in shoulder season Alpine Light or equivalent, winter both if needed.

The weight difference is pretty minimal as well- a close approximation: MB Frost Line w/ 6.7 oz of 800 down is 19.7 oz; MB Ex Light (1.8 oz of 900) 5.3 oz + Alpine Light Parka (4.3 oz of 800 down) 13.3 oz = 18.8 oz (roughly the equivalent of 6.3 oz of 800)

granted, there are other features in a winter parka- length, style of hood, etc that should also be factored in, but a two jacket system isn't a bad way to go :)

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Good stuff, I appreciate it.

I'm actually torn between adding a vest or a down parka. Economics are playing a huge role in my decision making.

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