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  • Ultralight merino wool wicks away moisture, breathes well and resists odors naturally; a touch of Lycra® adds comfortable stretch
  • Corespun fabric boosts durability
  • Contoured pouch with functional fly
  • Flatlock seams prevent chafing
  • Machine washable; line dry or dry flat in shade


View all Icebreaker Men's Boxers

REI membership


Best Use Multisport
Fabric 83% merino/12% nylon/5% lycra
Moisture Wicking Yes
Quick Drying Yes
Inseam (in.) 6 inches
Gender Men's

Size chart

Sizing notes

Measurements are stated in inches unless otherwise indicated. CHOOSING THE RIGHT SIZE: If your body measurements are midway between two sizes, select the smaller size for a tighter fit or the larger size for a looser fit. If your body measurements result in different sizes, we recommend using your chest measurement for tops and your hip measurement for pants.

Rated 5 out of 5 by from Great boxers I bought these for backpacking through South East Asia and they were perfect. I packed in a very minimalist fashion. I only had four changes of clothing. I relied on my Icebreaker gear to be friendly towards hand washing in a sink, hanging to dry, and being wearable within about 12 hours. They performed just as I'd hoped for the whole trip.
Date published: 2017-04-19
Rated 5 out of 5 by from These undies are going swimming in the Arctic! Leaving on a Motorcycle Adventure to the Arctic Ocean in June. California to Prudhoe Bay and back in 18 days.
Date published: 2017-05-08
Rated 4 out of 5 by from Will buy more. I'd really like a 100% merino wool option. But these are comfortable and I'm happy to have a more natural underwear.
Date published: 2017-04-20
Rated 5 out of 5 by from Great product Been searching for a product like this for years. Great combination of comfort and fit. Would recommend to anyone.
Date published: 2016-09-08
Rated 5 out of 5 by from Military Thumbs Up I purchased these for my husband who is a member of the US Army. He is being deployed overseas and I wasn't sure what to purchase him for Christmas. Not the most romantic gift until he wore them! He loved them. He was especially pleased that they didn't "rideup" while the were caravanning for 18 hours. He has never expressed any emotion over undergarments before. My only hope is that they hold up to military laundry facilities.
Date published: 2017-01-04
Rated 5 out of 5 by from My "Go To" Briefs for extended backcountry trips I've tried many briefs over the years and these are by far the best fitting, best looking, and best wearing. I do a lot of backcountry trips and travel light. I'll typically take 2 pairs of brief and rotate them daily. The merino wool dries quickly and will not stink, like so many other briefs. I also wear these as my daily briefs around town. I have 4 pairs. Pricey, but well worth it!
Date published: 2017-01-22
Rated 4 out of 5 by from supper comfy one of the most comfortable pairs of boxers I own. perfect leg length and unobtrusive stitching/seams. Only complaint is the fabric is bit thin and can be prone to ripping (especially if you have close encounter with a tree while mountain biking).
Date published: 2016-11-16
Rated 5 out of 5 by from ANATOMICA LONG BOXERS WITH FLY whether skiing, sleeping, or just hanging around the house, these are the absolute best underwear. they breathe, don't bunch, don't carry odor, and are warm given how thin they are.
Date published: 2017-02-04
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