Like the kiln long johns, but thicker and warmer. Really awesome. I have the kiln LJs in medium and they fit perfect. I listened to reviews and ordered these a size bigger, and the large fits perfect. They are a great length, fit in the thighs and bum. I didnt find the rise of these too low like other reviewers. I actually like the slightly lower rise of these. Overall: awesome base layer for the cold days!

I bought these pants for winter hiking and for next hunting season. I'm very impressed with the weight of the material and they do an excellent job of keeping me warm and dry. I only wish that the waist was a bit higher and the leg length about an inch longer; the pant leg sits just above my ankle bone. I would love to have a pocket on the thigh because the Furnace Long Jane is warm enough to be used alone for current Washington hiking weather, but I understand this is a base layer, so I bought the Obsidian pants as an outer layer. I purchased the Furnace Long Jane in Conifer and it is a lovely color. Overall, I'm very happy with the purchase and love these pants; they are perfect for my needs!

This is the best hoodie I’ve ever owned! Got this halfway through my first Whitetail season and it made all the difference! I was freezing in regular thermals on my stand and now I’m toasty as can be. Especially love the thumb holes and that it’s long in the back and covers my bottom. A warm lady is a happy lady! Thanks Firstlite- you’ve got me for life!

I purchased for duck hunting but gave them a trial run on the shores of Lake Superior. I stayed warm despite the wind and chilly temps. My legs got wet several times from the waves, but I stayed warm even when soaked. They are very comfortable and seemed to dry out pretty quickly while I was still wearing them. I do wish the waistband was slightly higher, just makes it easier when layering!

I bought these Long Johns as a base layer for hunting in Alberta's colder late hunting season when the first light and last light temps are less than pleasant and they exceed my expectations. These pants are very comfortable, and very warm! They feel like you're wearing warm, snuggly pajamas! In fact my husband bought the same product in the men's line and he is thrilled with them too! First Lite has the best Marino products I have ever bought! I cannot wait for my Furnace Quarter Zip to arrive! Also: I washed the pants and they washed great! no pilling, no shrinking! GREAT PRODUCT!

I picked a M based on the Kiln sizing (145 lbs, 5'8) and they were a bit snug around the hips and fairly low rise, but the issue was mostly the length- ended a good four inches above my ankle bone (not long like the pictures) and I'm not super tall. Going to try a large instead.

My partner loves the male version.

First, as primarily an eastern Whitetail hunter, I spend a lot of time in a tree stand trying not to freeze to death and FL finally making this layer for us gals has been a godsend! I can where these under my Sanctuary bibs and tolerate pretty much anything down to 10F. (below that I throw on an extra pair of fleece leggings. I got into duck hunting this fall as well and these under my neoprene waders took care of pretty much the coldest, nastiest weather I was willing to hunt. I got the the Furnace top as well and both became the first layers I pulled on many mornings this past hunting season. As for the fit, I ordered my usual size, medium. I own at least a piece of each women's specific garment FL makes and they are all medium (expect for those 1st gen pre-Kiln leggings that are size small). These fit more like a small. The rise in the waist is low and the leg length is shorter. I'm 5'6", so the length wasn't a deal breaker for me (I'm usually wearing calf high wool socks if it's cold enough to be pulling these Furnace leggings out), but if you're taller than that or have an inseam longer than 30" these are likely to be annoyingly short. The thighs too. felt small and my quads seem to be at the limit of what they will stretch. I know COVID has added a couple of pounds, but at the same time, I also ordered the Kiln leggings, also in a medium. I love those things! They have plenty of length for an inseam up to 32-33" and the waist sits higher so I never have to worry about a cold draft down the back of my pants if I squat down to examine something. Hopefully when the 2.0 version is out again in 2021, FL will have addressed these sizing issues, made them more like the Kiln just in a heavier weight, and the perfect women's warm merino legging will finally exist!

I'm built like a string bean and always cold, so figured the medium would work, but they are quite short and super tight. Little prickly/itchy as well, but I'm still going for it and getting the large size.