What 6 layers would that be?

Thanks.

Here's the full parts list. I rarely carry all layers unless I'm expecting it to be -35C or worse. I'll usually carry more than I need though since the individual parts are fairly light and I like to be ready for unexpected weather. Snow in July isn't impossible here.

• MEC Merino Wool long underwear tops and bottoms (they were getting thin so they've been demoted to dedicated sleepwear duty)
• Silk Mummy Bag liner
• AMK 2.0 bivy
• The North Face Aleutian bag (+20F rated)
• MEC Penguin Overbag. Long. (+15C rated by itself)
• REI Minimalist Bivy. Long.
• MEC Kelvin 2.5 sleep pad. Short.
• Thermarest RidgeRest foam pad.

In winter I'll wear the long underwear, use the 2.0 bivy as a vapor barrier liner for the bag, both sleeping bags, the REI bivy, and both sleep pads (the double sleep pad is untested as i just got the Kelvin this spring. I plan to put it inside the REI bivy for additional warmth and comfort with the closed cell pad on the ground/snow). The secret to this systems success is the vapor barrier. I've posted about this topic and this system before so I won't get into it here. Just know that this system has been proven to worse than -30C WITHOUT the Penguin overbag and with only the Ridgerest pad.

For weather like we see right now I'll have the Silk liner, the Penguin overbag and the REI bivy only...that's about the minimum though if it's crazy hot I might just crawl inside the AMK 2.0 bivy. I've yet to be so hot that it seemed like a good thing to do. I sometimes wear the wool undies in the summer too (or instead of the silk) because Wool really helps regulate your body temperature...hot or cold. Silk is just more comfy when the weather gets muggy.

Still a bit fuzzy on how you deploy all this.

If it was killer cold, which would be the outside layer, which the next, etc.

Or, if it is esier, staring from the innermost [the underwear, I assume] what layer is next, etc.

Thanks.

Polyethylene or silk weave underlayer next to my skin for comfort and wicking. Then thin woven merino wool layer, then breathable nylon or poly shirt and pants, then breathable waterproof fleece shell. That is the clothing extreme, for the sleeping bag I've got a 0 degree 4.5 lb poly bag, oversize, in rectangular form, a full size self inflating mattress pad underneath, and a waterproof breathable fleece blanket to wrap around the bag if need be. This all goes inside a 2 1/2 man 3 season tent, with a deluxe poly tarp guyed and poled over the top of that if need be. But all that is luxury. I usually make do with only part of that list.

I wish I could draw this...it's how I planned it out in the first place last year. Here it is again starting from the inner most layer using winter as an example since it's got most of the layers

• Long underwear is the inner most layer obviously.
• AMK 2.0 bivy is next. It acts as a vapor barrier and radiated heat reflector
• Aleutian sleeping bag is next as the main insulation
• Penguin overbag as extra insulation
• All this goes on top of a MEC Kelvin 2.5 sleeping pad
• All the above goes inside an REI minimalist bivy
• Under it all is the closed cell sleep pad.

With the exception of the pads the whole thing is kept together and rolled up all nested inside itself toe first. Then I put it into an Outdoor Research drycomp compression bag so it fits nicely into my pack. The summer set gets similar treatment only in a smaller compression bag.

Found it. Search for "sleep system" (include the quotes) and you should find the 3 or 4 posts I made over the winter about my crazy sleep kit and subsequent balcony test session.

I use my Hennessy Hammock with the 4-season system in all kinds of weather but haven't been able to try it out in very cold weather yet. One thing I did add was an "underblanket" from Wiggy's, It's not listed on their website but they do make them on a per order basis.

If I used a cart or sled in winter with adequate snow, I'd seriously consider getting a Grand Shelters ICEBOX. Come to think of it, I'll have to start researching carts that can convert to sleds for BOB/INCH purposes. (No affiliation with Hennessy, Wiggy's, Grand Shelters or any cart/sled manufacturer or supplier.)

LINK: Grand Shelters ICEBOX

Igloo's are great but you need the right kind of snow or building one is impossible.

Using the traditional Eskimo method perhaps but evidently not with this method. The manufacturer claims any kind of snow will work because the friction of packing it into the box causes the particles to bind together. The biggest drawback is that it requires at least two people to use, a "form handler" and at least one shoveler.

I've thrown too many snow balls to believe that. Some types of snow just won't stick to itself...period.

I checked the site again but I didn't see where they specifically claim it works with all types of snow.