Men's Kiln Long Boxer Brief – First Lite Performance Hunting
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Men's Kiln Long Boxer Brief
Men's Kiln Long Boxer Brief
Men's Kiln Long Boxer Brief
Men's Kiln Long Boxer Brief
Men's Kiln Long Boxer Brief
Men's Kiln Long Boxer Brief
Men's Kiln Long Boxer Brief
Men's Kiln Long Boxer Brief
Men's Kiln Long Boxer Brief
Men's Kiln Long Boxer Brief

Men's Kiln Long Boxer Brief

Midweight 250 Merino-X


Color/PatternFirst Lite Cipher

From September elk to January mallards, the Men's Kiln Long Boxer Brief is the perfect solution for cooler weather. The 10" inseam and articulated construction are familiar to those who know our Red Desert of years past. Constructed of Midweight 250 Merino-X fabric, this interlock knit is being used in our boxer category for the first time to add super comfortable insulation in cooler weather.

The Kiln Midweight 250 Merino-X fabric utilizes ultrafine, 18.5 micron merino wool in a high loft, interlock knit to create styles that surpass expectations in the broadest range of temperature and weather conditions. Blending a small component of spandex into this knit, these lofted interlock pieces can withstand extended hunts in the field, regardless of the season.

The Kiln midweight 250 Merino-X is also available in a men's Boot Top Bottom.

Product Videos

Men's Kiln Long Boxer Brief Details

Layering Position

  • Next to Skin


  • True to size: Purchase your normal size to wear over or under other layers
  • 18.5 micron, superfine merino wool
  • 95% merino / 5% spandex
  • Interlock knit for high loft insulation and moisture management
  • Jacquard waistband
  • Fully functional fly
  • Flatlock seams for next-to-skin comfort
  • Machine wash, line dry

How It's Built

  • Material: Merino-X
  • Cut: Athletic
  • Primary Uses:
    • Spot & Stalk
    • Tree Stand
    • Waterfowl
    • Upland
    • Fishing
  • Material Weight: 250 Midweight
  • Weight: 6oz.

Where to Use

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

Customer Reviews

Based on 11 reviews
Product Size: L
Height: 6'6"
Weight: 225
Work Great

They do what I need them to do.

Fit: 4
Product Size: M
Height: 5' 11"
Weight: 170lbs - 180lbs
Location: Utah
Primary Use: Lifestyle
Fit Comments: Runs large and loose
Great wool (but waistband big)

I wear a 32 (recommended 31-33 for medium). The waistband is loose and there is bunching of material around waistband.

Fit: 4
Product Size: M
Height: 5' 11"
Weight: 160lbs - 170lbs
Location: Utah
Primary Use: Spot & Stalk
Fit Comments: I'm a slim guy with a 32&quote; waist and I felt like the fit was a bit loose during the initial try-on, but never had any issues with chafing or bunching. Overall, I highly recommend the Kiln underwear based on their performance for me.
Stank reduction device

I ordered these with the goal of wearing them on a week-long elk expedition into the backcountry. I had high expectations; temps ranged from high teens to mid 50s, and I was planning on bringing a single pair of underwear that had to do it all. 7 days later, I emerged from the pines with a solid respect for the power of merino. Minimal odor despite many hard miles of sweat-soaked hiking. After day 3 I noticed some pilling on the thighs where my pants rubbed against the fabric, but only time will tell if that matters down the road. The one 'downside'** I would say is that if your sleep system is warm enough to keep you comfortable, these underwear are probably too warm to wear to bed. Next time I'll bring something more lightweight to sleep in and hike in these during the day. **Not actually a downside. These are supposed to be warm.

Fit: 3
The best!

These boxers are the best. Extremely comfortable, don't ride up, fight odors extremely well, and now with the addition of spandex, hold up better than the red deserts did. Now I just need about 15 more pairs so I can wear them every day.

Fit: 3
Product Size: L
Location: Minnesota
Primary Use: Tree Stand
Fit Comments: Super comfy and athletic fit
Best underlayer

Much more comfortable and warm than synthetics.