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

Men's Fuse Zip Off Boot Top

LIGHTWEIGHT 200 AEROWOOL

$105.00 USD $78.75 USD

Color/PatternFirst Lite Cipher

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.

Embedded with 37.5 Technology, the Aerowool Fuse 200 fabric is best utilized by the late-season, on-the-move hunter who demands comfort, breathability, and moisture management while actively pursuing game in frigid conditions. Built for versatility, the Fuse Zip Off Boot Top Long John is also a viable option for the stationary hunter who needs a mildly insulating base layer to maintain warmth during cool, but not bone-chilling, days in the stand or behind the blind.

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

Product Videos

Men's Fuse Zip Off Boot Top Details

Layering Position

  • Next to Skin

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
  • 17.5 micron, ultrafine, merino wool
  • Lightweight 200gsm jersey knit fabric provides exceptional versatility
  • Exclusive 37.5 Active Particle Technology to exhaust moisture and maintain optimal core body temperature
  • Boot top cut
  • Next-to-skin fit for maximum comfort and support
  • Jacquard waistband and fully functional fly
  • Flatlock seams for next-to-skin comfort
  • YKK leg zippers
  • Machine wash, line dry

How It's Built

  • Material: Aerowool
  • Cut: Athletic
  • Primary Uses:
    • Spot & Stalk
    • Tree Stand
    • Waterfowl
    • Upland
    • Fishing
  • Material Weight: 200 Lightweight
  • Weight: 8oz.

Where to Use

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

Customer Reviews

Based on 21 reviews
76%
(16)
10%
(2)
0%
(0)
10%
(2)
5%
(1)
B
B.B.
Perfect!

Used these for a late season elk hunt at 10,000' and single digit temps. Snowed 18-24" on us the second day. These were great as they allowed me the warmth in the morning and the ability to shed the layer as the day warmed up. I liked not having to worry about them being down in my boots as well. Not sure why this review site is saying I'm from California, but I'm in Arizona. ;-)

J
J.
Fit:
Product Size: M
Height: 5'10"'10"
Weight: 175
Waist Size: 34
Inseam Length: 30
Draw Length: 27.5
Location: CO
Primary Use: bow and rifle hunting, fishing under waders, skiing
Best LJs out there

The fuse zip offs are amazing. I wore these in the cool mornings under Obsidian pants early in September and all day under the Obsidians later in the Fall and they were great. The ability to quickly zip off when you are heating up is great and will now be a feature on every pair of long johns I buy. I will also be getting a pair of the Furnace zip off boot top for those colder days when I will be more stationary. You don't even realize the zipper is there they are so comfortable.

B
B.
Fit:
Product Size: 34 x 35
Height: 604
Weight: 220
Waist Size: 35
Inseam Length: 34

Im interested. The description states you can zip these off without taking your boots off. My question is, Are they easy to put on without removing boots as well?

B
B.
Fit:
Product Size: L
Height: 71
Weight: 190
Waist Size: 30ish
Inseam Length: 32
Location: Fall-spring
New standard in long Jons

So brilliant. The long jons are wonderful, they are the same as all FL base layers, just great. Super warm and comfortable to hike in. The zipper is the best idea in outdoor performance gear I have seen in years. Put them first thing in the morning on or sleep in them then take them off with no hassle.

J
J.
Fit:
Product Size: M
Height: 5’ 6”
Weight: 180
Waist Size: 34
Inseam Length: 30
Zip offs are great!

The zip off boot cut fuse’s are great! I was worried with the zippers messing with the hair on my legs. No issues at all. Great product!

S
S.
Fit:
Product Size: M
Height: 5'10"
Weight: 188 lbs
Waist Size: 34
Inseam Length: 30
Location: Colorado, Nebraska, Wyoming, Arkansas
Primary Use: hunting and skiing
Super Versatile Layering Piece

I run hot, and that becomes a problem in the mountain when you wake up cold but exert heavily throughout the day. Thie piece solves that problem wonderfully. I don't notice the zipper and the waist line is super comfortable. Perfect degree of tight vs loose fitting.

G
G.B.
Fit:
Product Size: XL
Height: 5'8"
Weight: 280
Waist Size: 40 ish
Inseam Length: 30
Draw Length: 28
Location: So far the October hunts, I think it will have a place in my spring bear hunts as well
Primary Use: Hunting
Great idea!

Worked well, fit was good. I wish these were around earlier. Very convenient!

A
A.
Fit:
Product Size: L
Height: 5’8”
Weight: 190
Waist Size: 36”
Inseam Length: 29”
Draw Length: 26.5
Location: Idaho
Primary Use: Hunting Elk and Mule deer.
Never knew how much I needed these.

Hunting this year in Idaho saw 50 degree swings in temperature from 25f in the morning to 75f+ I was able to take these off in seconds without having to take my boots off. These were worn for 14 days without them getting slimy or sticking to my legs even when sweating. Zippers were comfortable and went unnoticed while hiking.

c
c.
Fit:
Product Size: L
Height: 6
Weight: 215
Waist Size: 34
Inseam Length: 32
Location: Yukon
Primary Use: sheep/moose
Nailed It!

I put 60 + days in these this season in YT as it was a cold and wet august/sept. The Fabric and Waistband never stretched out at all and I never noticed the zipper even when sleeping on my side. A much better upgrade from my kuiu zip off long johns.

J
J.
Fit:
Product Size: M
Height: 5'11"
Weight: 170
Waist Size: 32
Inseam Length: 32
Location: WY
Primary Use: Early season elk
Didn't know what I was missing

I'm standing here on the side of the mountain typing this on a note in my phone. We stopped as a group to take off our baselayers before a big 1,000 vertical foot hike up the hill. In the time it is taking the other members of my hunt party to sit down, take off their boots, take off pants, take off their longjohns, and put their pants and boots back on - I had already dropped trow, zipped these things off, put them in my pack, ate a granola bar, and had enough time to pull out my phone and type this review. I will never buy another pair of non-zips. Even when hiking, I didn't get too sweaty in these. They keep me nice and toasty in low-40's in the morning and into the high-50's didn't get too hot.