Men's Fuse Long John | First Lite
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Men's Fuse Long John
Men's Fuse Long John
Men's Fuse Long John
Men's Fuse Long John
Men's Fuse Long John
Men's Fuse Long John
Men's Fuse Long John
Men's Fuse Long John
Men's Fuse Long John
Men's Fuse Long John
Men's Fuse Long John
Men's Fuse Long John

Men's Fuse Long John

Lightweight 200 Aerowool

$90.00 USD

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When temperatures begin to fall but breathability and dry times are still concerns, the Men's Fuse Long John is your go-to base layer. Featuring a comfortable, jacquard waistband and a fully articulated fit designed to leverage the structure and stretch of our Aerowool fabric, the Fuse Long John epitomizes versatility in the field.

Lightweight 200 Aerowool construction combines the finest, 17.5 micron merino wool available with 37.5-activated nylon fibers to create a super-charged fabric with incredible performance benefits. What you get is enhanced odor resistance, exponentially improved dry times, increased durability and moisture-wicking, and a fabric that can cool you down when you're heating up and warm you up when it's cooling down.

The Fuse Lightweight 200 Aerowool is also available in a men's a men's crew, quarter zip and a Henley

Product Videos

Men's Fuse Long John Details

Layering Position

  • Next to Skin


  • 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
  • Full length
  • Next-to-skin fit for maximum comfort and support
  • Jacquard waistband
  • Fully functional fly
  • Flatlock seams for next-to-skin comfort
  • Machine wash, line dry
  • Naturally UV absorbent to eliminate shine

How It's Built

  • Material: Aerowool
  • Cut: Athletic
  • Primary Uses:
    • Spot & Stalk
    • Tree Stand
    • Waterfowl
    • Upland
    • Fishing
  • Material Weight: 200 Lightweight
  • Weight: 6oz.

Where to Use

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

Customer Reviews

Based on 34 reviews
Product Size: M
Height: 5’10
Weight: 175
Waist Size: 32
Draw Length: 27.5
Location: Alaska
Primary Use: Backcountry
Product Size: XL
Height: 6'
Weight: 220
Waist Size: 34
Draw Length: 28.5
Location: TX / KS
Primary Use: Mid season base layer
Product Size: M
Height: 5 ft 7
Weight: 160
Waist Size: 33
Location: Wyoming
Primary Use: Base layer for camping and hiking
Perfect midweight base layer
Product Size: S
Height: 5'10"
Weight: 135
Waist Size: 29
Solid foundation
Product Size: L
Height: 6’3’’
Weight: 180
Waist Size: 34
Draw Length: 34
Location: Hunting/fishing/work
Primary Use: Base layer in cold weather
Fuse long johns