Based on your IP Location or Currency Selection you are now shopping in United States Dollars United States Dollar. If you need to change your currency please make a selection in the selector below.
Shopping Cart
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

Color/Pattern
In Stock & Ready to Ship

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

Customer Reviews

Based on 109 reviews
88%
(96)
9%
(10)
2%
(2)
0%
(0)
1%
(1)
S
Scott S.
Fit:
Product Size: M
Height: 5'9"
Weight: 190
Waist Size: 34
Inseam Length: 30
Draw Length: 27
Location: Rockies Mountains
Primary Use: Bowhunting
Minimal Weight Maximum Warmth

These Johns are the lightest weight alternative to maximum warmth for late season clothing on the market today. Throw in breathability, anti- odor, heat retention in wet conditions, comfort, silent, and adaptability with the zip off features, and you have the ultimate option for late season base layer clothing.

J
Jamman
Fit:
Product Size: L
Height: 6’
Weight: 200
Waist Size: 35
Inseam Length: 33
Location: Hunting
Primary Use: Glassing or while in tree stand.
Nice and warm

Easy on, easy off, easy to pack. These are my first pair of zip off thermals. They won’t be my last. I throw these in my pack and have an instant layer of warmth when needed. Packs smaller than most alternatives. I recommend them.

B
Brady Neugebauer
Fit:
Product Size: L
Height: 6 1
Weight: 195
Waist Size: 32
Inseam Length: 34
Draw Length: ?
Location: Hunting
Primary Use: Mid layer

U

K
KW
Fit:
Product Size: XL
Height: 5ft 9 in
Weight: 275
Waist Size: 40
Inseam Length: 30
Location: Outdoors
Primary Use: Outdoor work and hunting
Perfect fit

Bought these for my husband, he loves them! They are comfortable, fit great, and are easy to put on/off.

R
RT
Fit:
Product Size: M
Height: 5’9"
Weight: 170
Waist Size: 32
Inseam Length: 30
Primary Use: cold weather fishing and camping
Warmer than anything else you’re considering

The day I bought these I decided to wear them around the house to see how comfortable/warm they were… That lasted for all of about 2min before I was uncomfortably hot. These are definitely the real deal. I’ve worn these under hip waders when fishing and stayed incredibly comfortable with temps around 15-20. It’s also great to easily/comfortably strip them- Once the outside temp passes 35 they are too warm.

J
Jake Wolff
Fit:
Product Size: L
Height: 6'2"
Weight: 230
Waist Size: 38
Inseam Length: 32
Where have you been all of my life?!

Amazing concept engineered to perfection. I'm a PNW hunter - early AM hike up the mountain followed by a frozen glassing session was my 'normal.' Not anymore. If I know I have a serious hike in the AM, I throw the Zip Offs in my pack and easily slip them on (while keeping my boots tied!!) during twilight. Alternatively, during lower elevation hunts, I will kickoff the AM while wearing the Zip Offs and, then again, easily remove them IF the temp spikes during the afternoon or if I start chasing an animal. Super comfortable.

j
josh pearson
Fit:
Product Size: L
Height: 5’7
Weight: 235
Waist Size: 38
Inseam Length: 30
Location: Stationary sits.
Primary Use: Deer and waterfowl hunting.
Toasty

These are great. The shorter length doesn’t leave your legs cold. Great when wearing taller boots. When it gets warm they do wick some moisture and give you time to reach a point when you can zip them off.

M
Michael
Fit:
Product Size: L
Height: 71
Weight: 185
Waist Size: 35
Inseam Length: 32
Fantastic

Excellent build quality. The matierial as a base layer is perfect. FL’s base layers are the best between the three major brands.

N
Noel Brandon
Fit:
Product Size: L
Height: 5’10”
Weight: 230
Waist Size: 36
Inseam Length: 32
Draw Length: 30”
Location: Duck blind
Primary Use: Sitting in the duck blind and cold mornings choring on the homestead
Wish I got these sooner.

Everything I was expecting. Warm, comfortable, easy efficient removal without having to take off your boots/pants.

T
TR
Fit:
Product Size: M
Height: 5'10"
Weight: 170
Waist Size: 32
Inseam Length: don't know
Location: Hunting
Primary Use: Hunting
Amazing

Bought this along with the quarter zip upper. Amazing clothing. Keeps me warm when I need it without overheating me. Perfect. Love First Lite.