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Baselayer technology makes for one great boxer.

Utilizing the same design technology employed for its high-performance baselayers, Icebreaker infused the Men's BodyFit 150-Ultralite Anatomica Boxer with all the same comfort and functionality. The super-soft jersey knit merino wool is very lightweight, breathable, and its anti-microbial properties fight odors―great if you're working up a sweat or on a backpacking trip where you need your undies to last for the long haul. And for less adventurous days, these same features make for all-day comfort. A little bit of Lycra adds stretch for a contoured fit, the satin jacquard waistband keeps things secure, flatlock stitching prevents chafing and a contoured pouch with fly makes things easy when nature calls. After being spoiled with this level of high-performance comfort and easy functionality, you'll have a hard time settling for anything less.

  • Ultralite merino wool jersey with a hint of Lycra stretch
  • Boxer brief cut
  • Contoured pouch with fly
  • Satin jacquard waistband
  • Flatlock stitching

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Here's what others have to say...


Comfy and awesome

  • Familiarity:I've put it through the wringer
  • Fit:True to size
  • Height: 6'1"
    Weight: 210 lbs
    Size Purchased: Large

I got my first pairs of Icebreakers when I went to China. Had to pack light and didn't know what kind of accommodations I'd have. Four years later, I'm still getting these for daily wear.


The only underwear you need

  • Familiarity:I've put it through the wringer
  • Fit:True to size
  • Height: 6'1"
    Weight: 178 lbs
    Size Purchased: Medium

I have been using this product for about 5 years and have gone thru one change. It is simply amazing. Nothing more nothing less. My wife does not want me to share the 'benefit' of this underwear with people...but I think you need to know - while traveling - there is nothing like that. You can easily wear it 3 to 4 days in a row with hanging it overnight to air out... (I know - most people say -WHAT? GROSS!... but believe me it is not. Most people would never share or admit to this but if you try it - you will know it. I traveled thru Europe for 18 days with 6 pairs and no wash... I only use Icebreaker shirts, t-shirts, and shorts. I travel with a single EU friendly carry on for those 18 days. Very efficient and compact.


Good until they are not

  • Familiarity:I've put it through the wringer
  • Fit:Runs large
  • Height: 5'9"
    Weight: 165 lbs
    Size Purchased: Small

So these have a great fit to them and don't stretch like a lot of underwear do. The cut is athletic and allow for freedom of movement without a baggy or an encumbering feeling. The material is soft, but I would not say it is soft like a silk or many micro fleece products out there. These wick away very nicely and do a good job of breathing. Unfortunately on one of the many pairs I own after only 6 months I already have a hole in the backside of a pair so I can not give them much higher than 3 stars due to a lack of longevity. I think it is not too reasonable to expect at least 1 year out of a pair of underwear, especially when I rotate between say 20 different ones. Of course that is just my experience and maybe I received one with defective qualities. I have an actual waist of 33 inches and these fit me in the size small perfectly.


Fantastic Under Trousers!

  • Familiarity:I've put it through the wringer
  • Fit:Runs small

So soft and comfy for your nether regions. Love the material. Fit is a little small but not too terribly so. Waist size 36 and i got the large, they fit although a little tight. Still a premium boxer. A little shorter that some, closer to a brief than a boxer brief but not so much that i would complain. Great colors too, and the color doesn't fade in the wash. Will def buy more! Well worth the price.


Fit change

  • Familiarity:I've put it through the wringer
  • Fit:Runs small

I've had a few pairs of these before, all fantastic. They have recently redone the fit and it seems to be more wedgie causing.



  • Familiarity:I've used it several times
  • Fit:Runs large

As Tony the Tiger would say, if he wore merino wool boxers. I like these a lot - fit, style. Yep they're shorter like the pic shows. 33-34 waist, medium fits nicely.

I wouldn't wear these on longer hiking trips as I like longer, tighter boxer briefs to prevent inner thigh chafe, but for everyday use these are comfy. These do fit snug enough, I hate baggy boxer briefs.



  • Familiarity:I've used it several times
  • Fit:True to size

I absolutely love icebreaker. I'll start with that. The material is amazing, and feels great.

Smell, well.. not there.

Fit.. is absolutely terrible to me.

I was looking for a boxer brief.. these are so short in the leg they might as well be briefs. They do not maintain shape too well over a period of one day, let alone 4+ days.

I really wanted to love these, but can't say i do. Just bought Stoic boxer briefs and waiting on them to try. W

I think has these categorized wrong. They are much more of a trunk brief than a boxer brief.