I had Sitka base layer and a dualfold layer, the mountain vest and then the 90% followed by snow camo shell. The folks at Sitka Gear are realizing that it is difficult to make one garment that fits all needs. They are coming out with a new cold weather line for stand hunters. I feel the current "system" will keep me in my stand down to about 20 degrees. So on a day like this (-5 wind chill)I had to put on another layer over. I took it off when I get down to track, stalk, or drag (carry) deer because I would then be too warm. This is another reason I don't often hunt without my Bison Gear pack. It carries all the stuff to keep me in all day. Including camera gear and food. A storm is rolling in now and I have to go hunt again for the next 5 days. I won't be back untill the 2nd. I love this stuff! We are blessed.