![]() For a synthetic it compressed and rebounded with good loft for years but it is now worn out. My three season puffy or better mid-layer for backpacking in Central Rockies and basins has been a now 12 year old Patagonia Micro Puff pullover with 1/2 zip (anorak). I use the lightest of these as "insurance" in the early spring and in fall if the temps dip. I can't, at this late date, explain my strange penchant for Montbell jackets, but it was probably merely "happenstance" or a series of sales as the season ended. ![]() I have a few really light Montbell Thermawrap (synthetic fill) jackets and parkas to use as "middle layer", as well as a selection of their old (circa 90s) down "inner" jackets and a couple of their "Alpine Light" parkas. I don't know what the latest "tech terms" are for it, but many of my lighter jackets (and gloves) feature what they used to call "windblocker" layers. My "wind jackets" are almost exclusively used for walking/running these days, because they can be carried very easily in a pocket, and provide some short term help with light rain. My heaviest down jacket is almost always used this way, so I have something for fallback if I encounter an unexpected dip in temps. If I have to take heavier outside layers, I take something down I can use as a pillow inside a bag. I tend to put on slightly heavier layers or multiple layers, then, as needed, insulation and/or weather layers on top of that. I have tons of cheap poly base layers (also some Capilene and other odds and ends from various sources, like Marmot, most of which I found on sale/clearance online, but I found that Capilene was relatively fragile, at least IME - as well as expensive), so I use cheap stuff from wherever. These jackets are old designs from the 90s, so the R1 has ventilation panels under the arms and along the arms and sides. I rarely use the R1 except as a casual jacket at home, and the R3 has been in my closet moldering for years. I have an old R1 (as well as an R3 "shag" Regulator, I think), but I really prefer using my clothing as layers in a fairly extreme way (I guess, but I guess nearly everyone does that too) instead of wearing heavier jackets. My shell is often the first on and the last off as I match conditions and needs. I’ve got a variety of hard shells that I choose to fit various situations: they differ in length, toughness and features and so weight, what they all have in common is that none of them are insulated: I choose that separately from fleece vests and jackets to a down vest. But I shut off that wind chill first thing.įor any application requiring flexibility I find having my wind blocking layer not fixed to any level of insulation best: it means I’m never faced with losing my wind/rain protection just because I’m getting too warm. My system actually starts with an uninsulated goretex hardshell under which I’ll add insulation over my base as necessary. If that warmed air is constantly being replaced with the colder surrounding air through porous layers then your heat loss stays at maximum. Heat energy transfer rate is proportional to the difference between two objects temperatures: warm air next to your body means a slower rate of transfer out of you. In other words that wind chill effect weather people talk about. It sounds as if you’re currently not using a wind proof shell as your outer layer and if so that’s a huge energy gap in your system: energy loss through constantly replacing the warmed air next to your body with the freezing air you’re moving through just constantly pulls heat from your body.
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