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Icebreaker
Anatomica Boxer + Fly - Men's

4.215686274509804 out of 5 stars
51 Reviews
$45.00
Color:Black2

Size:

Size Chart

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Anatomica Boxer + Fly

The Icebreaker Men's Anatomica Boxer + Fly combines a trail-worthy performance with comfort you crave every day. Its merino wool blend offers long-lasting softness, and it's thermal-regulating, moisture-wicking, and quick-drying for a solid performance while backpacking. Merino wool is also naturally odor-resistant for a touch of freshness when there isn' a washer in sight.

Details

  • Adventure-ready boxer built comfy enough for every day
  • Merino wool blend excels at thermal regulation and odor control
  • Flatlock seams feel smooth to the touch
  • Item #ICE00H8
Responsible Collection
Responsibly Sourced
Material
83% merino wool, 12% nylon, 5% Lycra
Cut
boxer brief
Inseam
5In
Anti-Odor
natural attribute of merino wool
Manufacturer Warranty
1 year

What do you think about this product?

Overall Rating

4 based on 51 ratings

Review Summary

1 Stars - 3 reviews
2 Stars - 5 reviews
3 Stars - 3 reviews
4 Stars - 7 reviews
5 Stars - 33 reviews

Fits True To Size

Screen reader users: the following list provides a visual scale to illustrate the product fit. Please refer to the heading above for the fit type in text.
Runs smallTrue to sizeRuns large

Customer Images

Here's what customers have to say

The merino wool underwear is consistently described as extremely comfortable, soft, breathable, and odor-resistant. Customers praise the fabric's ability to regulate temperature and wick away moisture. While some note the higher price, the majority feel the high quality and performance is worth the cost. Overall, the underwear is a top choice for those seeking comfortable, high-performing, and durable undergarments.

AI-generated from the text of customer reviews.

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5 out of 5 stars

September 9, 2025

Good boxers. Good fit and work well for active people who sweat. Don't hold odor as much as cotton or synthetics.

Michael T
ExpertVoice.com

Originally reviewed on ExpertVoice.com

5 out of 5 stars

September 8, 2025

Wool underwear is the only way

Ive tried a lot of the performance/hiking underwear on the market and wool is hands down superior. I love these Icebreakers. I have 7 pairs now and its the only thing I wear backpacking or hiking now. Love them

Zach P
ExpertVoice.com

Originally reviewed on ExpertVoice.com

4 out of 5 stars

September 6, 2025

Not the most comfortable

Not the softest merino out there but not bad otherwise.

Ethan F
ExpertVoice.com

Originally reviewed on ExpertVoice.com

4 out of 5 stars

September 4, 2025

Underwear are comfortable and great for all day use. I’ve used them for daily wear, hiking and some climbing. Will be in the rotation for winter use too. I found the waistband to be comfortable and non-restrictive. They did ride up a little bit so I may find a slightly longer pair next time.

Chris M
ExpertVoice.com

Originally reviewed on ExpertVoice.com

3 out of 5 stars

September 4, 2025

Don’t hold up.

This was my first time using merino wool underwear. I was excited my the idea of wool underwear because I’ve been wearing wool socks for some time and love everything about them. The underwear was nice to start with but after about two months you began to see the thinning of the wool and after 3 more months I had gotten a hole in a pair I bought. They do what they advertise but just don’t seem to hold up. They are worth it for the price we pay but I don’t think I would recommend for someone who would be paying full price.

Chris k
ExpertVoice.com

Originally reviewed on ExpertVoice.com

5 out of 5 stars

September 3, 2025

Great Fit

Fit and feel of the undies are both stellar. at this price its difficult to beat the merino wool.

Ryan B
ExpertVoice.com

Originally reviewed on ExpertVoice.com

5 out of 5 stars

September 2, 2025

A solution to smelly cotton!

I love my Icebreaker boxer briefs! I try to only wear these, as they hold moisture and don't smell. They are comfy, and look great. I have worn these everywhere now, and am thouroughly impressed. From wearing them under my undregarments in my drysuit while diving, to camps along the river as we make our way down some multi day trips, and even on a summit of Rainier, these have performed exceptionally well.

Joel D
ExpertVoice.com

Originally reviewed on ExpertVoice.com

3 out of 5 stars

September 1, 2025

Feels great, but didn't last

I got these for motorcycle riding to try to eliminate swamp butt. They certainly do, but after a few motorcycle trips and laundry cycles they started to tear at the seams. I don't think I'd buy again due to this durability issue. Maybe they'd do better in a less demanding role instead of sitting on a motorcycle seat all day. Now they are used as backup underwear.

Evan M
ExpertVoice.com

Originally reviewed on ExpertVoice.com

5 out of 5 stars

August 24, 2025

Excellent for travel!

Traveled to three continents in the past 12 months and learned to travel light. In particular, with merino wool clothing that require less washing; seems odd… but anyone who travels with merino wool clothing in various weather, will completely understand the antifungal, anti-stink, temperature adapting qualities of the clothing. Icebreaker boxers WITH FLY (really important) are a go to for travel and everyday wear. Fit from size chart is on point, I hesitate to put in dryer, so I air dry. Fabric holds up great.

James F
ExpertVoice.com

Originally reviewed on ExpertVoice.com

5 out of 5 stars

August 18, 2025

Great boxers, comfortable and don’t ride up. I like the blend they are made with

Chris K
ExpertVoice.com

Originally reviewed on ExpertVoice.com

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Learn more about Anatomica Boxer + Fly - Men's