Woolpower Long Johns With Fly

I bought a set of 400g thermals for splitboarding and mountaineering in Alaska. I have worn them on long -20c days during which I have worked up quite a sweat. Thus far, I couldn't be happier.

The looped interior is really comfortable. Honestly, that doesn't matter much to me, as I am only concerned about function and would be happy to accept some level of discomfort in order to get the performance I want, but it has been a pretty sweet bonus.

Overall, these are the best merino thermals I have used to date, and I own items from all the major brands. Highly recommend.

Awesome underwear can't wait for true winter but I can tell these will be great!

These 400 weight bottoms are warm enough to let me wear lighter layers up top. I don't over-heat even working hard, up to -10c. The best temperatures for me are down around -30c and I can enjoy being out several hours at a stretch without alternating between over-warm and icing up. This wool is great quality and delightful to wear.

They are what they say they are. Very good for the snow and cold. Lighter, less dense and warmer than other, cheaper merino offerings I have used, and they wick very well. We'll see what their longevity is like, but all in all I am pleased to the extent that I might give the 400 weight version a go. I'd like to see a 3/4 cut, which would make them pretty much perfect for skiboots. The fly helps with peeing, so I imagine that is what it is for :)

Durabe. Breathable. Warm.

Don't know yet but this is the specific brand my son researched and wanted

I'm working outside a lot and these are the nicest Long Johns I own.Just keep in mind that they are probably sized for swedish people so that my large size is a bit longer than expected. Still working great.

Thick, warm good quality, comfortable. The waste band is a bit loose but holds well under the tighter wasteband or belt of a shell pant.

I used a pair of these in conjunction with a zip front turtleneck in 200g weight for late fall deer hunting. Even though it wasn't excessively cold this fall, I was more comfortable than I've ever been. The merino wool keeps you warm even when sweaty, while avoiding the cold, clammy feel. The only negative is that on very windy days, I could feel the wind cutting through my heavy wool pants and the long johns. The 200g is about right for late fall, while the 400g would likely be more appropriate for mid-winter.