I recently bought this for a trip up to northern BC. Last year I froze while moose hunting so wanted another wool layer to add to my system. Naturally, this year it didn’t drop below zero (Celsius). I still found this was the perfect layer for hiking to spots. This is warm enough to keep off the chill but not so heavy that you sweat buckets while hiking with a pack. I ordered the conifer thinking it was a neutral colour I could wear even if not hunting and figured I wouldn’t be wearing it as an outer layer. If I could go back I would order it in camo since I find it’s the perfect layer for spot and stalk and I wear it as my outer layer frequently! The pocket is also very useful. Definitely a good addition to the inventory.

Ordered a medium and it fits perfect.

I had noticed this was out of stock (in the colors I liked) and patiently waited for the re-stock notification. Once that arrived I was all over this. Not only i wear this as my final base layer but also wear it as a 1/4 zip for every day. Its very comfortable and very versatile.

Keeping wool as a base layer, the Furnace is an incredible next to skin cold weather layer. Flocked merino wool makes this great against skin for low output activities (tree stands, more spotting than stalking). Perfect base for cool/dry Colorado sits.

I'm 6', 205 lbs with an athletic build. I went with large size based on the comments. I wear large in all my other FL pieces. I planned on wearing the furnace as a near skin layer (on top of a merino t-shirt). Large was too big. Arm length, and especially the waist had too much material to effectively wear under my insulation layer. I exchanged for medium and now it's perfect for a base layer. So just heads up for those who want to wear this next to skin. Haven't had a chance to wear in the field yet, but like all FL gear, shirt construction is top notch.

I use my Furnace during all times of the year. In summer it works as an outer layer and in late season it's all I need under my puffy.