Won't make you uncomfortable even while sweating, is really lightweight and makes you wonder whether it will work in really cold weather (I haven't tested yet), but fits very nicely don't order too small or it won't fit for sure.

It's a head lamp it works, and is comfortable. On the highest setting you can cycle along dark roads in the night without too much trouble, although it is probably unsafe.

Although it is a lot easier to fold and unfold this compared to a normal rolled up CCF pad, that is its only advantage. Although it is light, the weight gains are marginal at best, its comfort level is not much different to that of a cheap ccf. Although this seems like a review thrashing the Z-lite, its not. It is a good CCF pad, and the folding design is genuinely helpful, however this pad will not wow you, I recommend spending your money somewhere else, it is not worth $40, get a military surplus pad.

The stretch system of the montbell is perfect for me because I am thin and most sleeping bags create a lot of wasted space (wasted thermal efficiency). The 40 degree rating is probably accurate if a little optimistic, you will need to be layered heavily at that temperature but it does work. Would not recommend use at anything lower. Is very resistant to moisture, light, small and a great bag at the price.

Awesome baselayer I basically haven't taken it off since I got it.

Odor-resistance is real, it is wearable for about 4 days without it smelling at all (but you will).

In terms of warmth, for me this and a t-shirt will be fine for just standing around down to about 60 F, with a light windproof shell around the mid 40s.

Initially, the itchyness of wool is tangible, but after 3 days of wear and a good washing, you will not remember it is made of wool, EXCEPT when you sweat A LOT (bad layering) it will become noticeably itchy, if you can adjust layers its not a problem at all.

Well worth the price. Get one you won't be disappointed.