Men's Furnace Zip Off Boot Top | First Lite
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Men's Furnace Zip Off Boot Top
Men's Furnace Zip Off Boot Top
Men's Furnace Zip Off Boot Top
Men's Furnace Zip Off Boot Top
Men's Furnace Zip Off Boot Top
Men's Furnace Zip Off Boot Top
Men's Furnace Zip Off Boot Top
Men's Furnace Zip Off Boot Top
Men's Furnace Zip Off Boot Top
Men's Furnace Zip Off Boot Top
Men's Furnace Zip Off Boot Top
Men's Furnace Zip Off Boot Top
Men's Furnace Zip Off Boot Top
Men's Furnace Zip Off Boot Top
Men's Furnace Zip Off Boot Top
Men's Furnace Zip Off Boot Top
Men's Furnace Zip Off Boot Top
Men's Furnace Zip Off Boot Top
Men's Furnace Zip Off Boot Top
Men's Furnace Zip Off Boot Top
Men's Furnace Zip Off Boot Top
Men's Furnace Zip Off Boot Top

Men's Furnace Zip Off Boot Top

EXP 350 MERINO-X

$145.00 USD $116.00 USD

Color/Pattern

When hunting out west, frost-covered mornings often turn into hot, sunny afternoons. In whitetail country, cold mornings can turn into cold sits without proper layering. Long johns are a no-brainer for both situations, but with temp swings or long distances to the stand, the hunter often finds himself overheating halfway through the morning's walk. Taking base layers off on the hill or before climbing the ladder involves taking off boots, dancing out of pants, shedding long johns and then replacing the pants and shoes. First Lite's new Zip Off Long Johns solves this problem by allowing the mountain or hardwoods hunter to shed base layers without consternation.

Our Furnace EXP 350 Merino-X fabric incorporates a brushed (fleeced) backside to our high loft, interlock knit to provide super-charged insulation without added weight. When combined with the silent, odor-free benefits of merino wool, and zip-off capability, the Furnace merino delivers unparalleled warmth and versatility on frigid days.

The Zip Off feature is also available in our Fuse Boot Top Long John and Kiln Long John.

Product Videos

Men's Furnace Zip Off Boot Top Details

Layering Position

  • Midlayer

Features

  • Velcro waistband flap secures zipper for easy zipper engagement 
  • Zipper starts at the top for easier initiation and zipping
  • Zipper slider is anchored at the bottom of leg opening (when bottoms are on) for backpack belt comfort
  • True to size: Purchase your normal size to wear over or under other layers
  • 20.5 micron, superfine merino wool
  • 95% merino / 5% spandex
  • Expedition weight, fleeced Merino fabric for extreme cold
  • Boot Top Cut
  • Jacquard waistband
  • Fully functional fly
  • Flatlock seams
  • YKK leg zippers

How It's Built

  • Material: Merino-X
  • Cut: Athletic
  • Primary Uses:
    • Spot & Stalk
    • Tree Stand
    • Waterfowl
    • Upland
    • Fishing
  • Material Weight: 350 Heavyweight
  • Weight: 13.5oz.

Where to Use

  • Temperature Range:
    • Below 20F
    • 20F - 45F
    • 45F - 60F

Customer Reviews

Based on 9 reviews
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M
M.G.
Fit:
Product Size: S
Height: 5'4"
Weight: 120
Waist Size: 29
Inseam Length: 29
Location: Southeast Alaska
Primary Use: High alpine hunting, training, and everyday between
Woman's Opinion

I know I wasn't the only lady looking at these wondering why there isn't a women's version and asking myself how bad the men's would be. Well, I ordered the men's and I don't regret it. I am normally a size 4 in women's pants, and the men's small fits pretty decently. There is an expected amount of "sag" but it is not as bad as I imagined it could be. They will fit under my pants and be a good asset to my gear lineup for my upcoming Dall Sheep hunt. The zip feature works as promised - totally awesome.

J
Joe
Fit:
Product Size: XL
Height: 6'3
Weight: 260
Waist Size: 38/40
Inseam Length: 33
Location: Northern California
Primary Use: Rifle hunting blacktail, pig, bear, and staying warm outdoors
Great Quality - Level Up For This Season

I mainly purchased this base layer for the convenience of being able to zip them off at the knees. It's genius - to put it simply. The idea of a base layer that unzips at the knees is analogous to cavemen using tools for the first time. Looking forward to avoiding sweating my a$$ off to avoid having to take my boots off on a peak in the rain... But they get better... for the past couple seasons I have been wearing the Under Armour 3.0 and 4.0 as base layers. The Furnace Zip Off is thicker than the 4.0 and much better quality. Yes, they should be, as they are nearly twice the price... but from the initial "unboxing" look and feel, I am expecting a significant difference in warmth. An upgrade in quality for sure.

Also pointing out the sizing... Maybe the XL is different proportionally than the other sizes... Or maybe the people selecting the fit to be "A Bit Small" or "Small" need to buy a full length mirror and stop buying pants with elastic waistbands so they don't have to admit to themselves that they are no longer the size they used to be. I'm only going here because I almost purchased a XXL based on their opinions. At 6'3 260lbs, I would honestly say if anything, these have a slight amount of room in the waist. I have hips big enough to squeeze triplets through and the sizing is great in the hips. This base layer in XL does extend a few inches beyond my knees and to the top of my boots which are mid shin height hunting boots. I also wear an XL in the Under Armour 3.0 and 4.0 base layer if that helps anyone.

E
ERic SMith
Fit:
Product Size: M
Height: 5’9”
Weight: 180
Waist Size: 33
Inseam Length: Boot top
Primary Use: Late season archery hunts
Warm but runs small

So first lite definitely does not have sizing down. I have a medium in the kiln zip off pant (old sizing 31-33) I just received my furnace boot top zip off pant also a medium (new sizing 33-35). My kiln zip off are a looser fit. Shaking my head. I purchased two pair of corrugate guide shorts both in medium. The waist sizes of the pants are drastically different.

E
Ed
Fit:
Product Size: L
Height: 6’ 2”
Weight: 200
Waist Size: 34
Inseam Length: 33
Too short

I really wish these were full length like the Kiln version of the boot/zip offs.

S
Shawn Regnerus
Fit:
Product Size: M
Height: 5'11
Weight: 175
Waist Size: 32
Inseam Length: 32
Location: Montana
Primary Use: Rifle hunting and Backcountry skiing
very usefull

I rarely buy new gear and never pay retail but I made an exception for these because nothing else really matches their performance. Being able to carry them in the top pouch of my pack and hike in in light pants and then quickly and easily add a layer for glassing or still hunting dark timber is a game changer.

M
Mike
Fit:
Product Size: M
Height: 6’
Weight: 175
Waist Size: 33
Inseam Length: 30
Location: Eastern and western
Primary Use: Eastern White tail, CO elk
The perfect base layer

The fit is fantastic. They’re the perfect length, to not bunch up in the top of my boot. Easy on and off in the field, as well as just being all around comfortable.

B
Brendan McHugh
Fit:
Product Size: M
Height: 6
Weight: 165
Waist Size: 32
Inseam Length: 30
Location: Back country hunting
Primary Use: Keeping warm
In the words of my native land....Dude!

Alright so I was a little hesitant to spend a bunch of money on underpants... I mean no offense to underpants but it’s not normally something on the “drool over gear list” after listening to “Cal’s Week in Review podcast” and having a big 5 day high mountain buck/black bear hunt coming up I decided to bight the bullet. Having Cal’s high praise for this garment ringing in my ear, I figured what the heck.

I’m originally from Southern California. Why I mention this is to illustrate the weight of the word I’m about to use to describe this product.. it has many meanings, and can be used for many thing but from 1 to 10 on the scale of “dude” these long handles rank a strong 11! I’m not going on a hunt without these things in my pack..... in summary...... “Dude!” Get yourself a pare.. by the by the hunt was amazing and I tagged my first black bear a Respectable 175lb male. Thanks guys!

B
Blaine Reinking
Fit:
Product Size: L
Height: 6'-4"
Weight: 165
Waist Size: 32
Inseam Length: 34
Primary Use: Upland hunting for those cold mornings that turn into warm afternoons
Under layer Sweatpants

Can't wait to get these out in the field and see how they perform, but as comfortability they are like wearing sweatpants without the bagginess. They have great fit with the ability to still have an under layer on. Will be using these mainly when I'm upland hunting for those cold mornings and by mid-morning/afternoon when it warms up I can zip them off. Will be a complete game changer!

J
Jamie
Fit:
Product Size: S
Height: 5'11"
Weight: 160lb
Waist Size: 30
Location: CA
Primary Use: Still hunting deer at higher altitude
Very pleased, particularly regarding the fit

I am very pleased with the the furnace. I am 5'11" and 160lbs. I wear a 30" waist for most pants. The small zip-off boot tops fit me comfortably on the waist. They are snug but not too tight on my legs. They come down to my mid calf. The material is relatively thick for long johns but also comfortable on my skin and fits surprisingly easily under my normal hunting pants, which are slim. I haven't tested them yet in cold weather, but just walking around my garage they seem warmer than any other long johns I've owned.