Merino 365
Men's Regular Boxer Brief - 100% Merino Wool, Charcoal Stripe
Men's Regular Boxer Brief - 100% Merino Wool, Charcoal Stripe
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Easy Pee Pee Fly
- Easy to Clean
- Merino = The Shit
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Your everyday essential - upgraded in merino. The Merino 365 Men's Boxer Brief is made from 100% merino wool (excluding waistband) for breathable, itch-free comfort that works just as hard at the office as it does on the trail.
Features
- 100% Merino Wool – 180gsm (excludes waistband)
- Superfine, soft, and fresh for longer
- Temperature-regulating for all-day comfort
- Moisture-wicking and breathable
- Supportive pull-on fit
- Easy-access fly
- No itch, no bunching, no synthetic cling
- Machine washable – cold, gentle cycle; lay flat or air dry
- Designed in New Zealand, made in China or Fiji
Description
Meet your new favourite pair. These merino boxer briefs are soft where it counts and tough where it matters. Made from 200gsm superfine merino wool, they’re designed to keep you cool, dry and comfortable - whether you’re climbing mountains, commuting to work or just kicking back.
The easy-access fly, elastic waistband, and streamlined fit make these boxers a no-brainer for daily wear. And since merino naturally stays fresh and manages moisture, they’ll feel fresh even after long-haul flights or back-to-back adventures.
Once you try merino underwear, there's no going back.
Fabric & Care
- Fabric: 100% Merino Wool (200gsm), excluding waistband
- Care: Machine wash cold on wool/gentle cycle. Use wool detergent. Air dry flat or line dry.
- Origin: Made in China or Fiji using merino
Why Merino 365?
Designed in New Zealand, tested by nature. Merino 365 uses premium, ethically sourced merino wool to create high-performance gear you’ll want to wear every single day—starting with what’s closest to your skin.

Best underwear I have. Thought they could be itchy, but soft comfortable. Easy care too!
My husband says they are very comfortable, warm and lightweight☺️
Best merino underwear I’ve bought
Great value and super comfy!
I have exclusively worn icebreaker boxer shorts for years. I recently swapped them to the 365 boxer shorts. Outstanding. Heavier fabric, slightly smaller fit in the XL. I won’t be going back.
- 5 stars: 146 (89%)
- 4 stars: 12 (7%)
- 3 stars: 4 (2%)
- 2 stars: 0 (0%)
- 1 star: 2 (1%)
Blinkin comfortable , supportive undies , great for running in or lazing around , but the best thing is , and I’ve tried nearly all merino undies is that they are strong and will go the distance like icebreaker were till they started their “ I can design blokes undies without talking to blokes “ 😎🤙🏿
Farming is a 365 days a year job and things often fall apart, so what better than some Merino 365 NZ boxers to help hold it all together. I'm pretty impressed with the shape, strength and colour range of my boxers, I couldn't ask for more but I'll definitely buy more for winter. An awesome team with a brilliant product.
Best merino underwear I’ve bought
Great value and super comfy!
I have exclusively worn icebreaker boxer shorts for years. I recently swapped them to the 365 boxer shorts. Outstanding. Heavier fabric, slightly smaller fit in the XL. I won’t be going back.
I love the product. The only thing I wear recommended to all my friends and colleagues just. Downside I get sent too much promotional emails other than that top notch
Excellent comfortable boxers
Great fit and extremely comfortable
Great quality and slightly heavier weight for durability.and fit well. Definitely recommend.
Warm and cozy. Wouldn't wear for high-intensity exercise; however, perfect for day-to-day wear.
Very comfortable and supportive
Excellent boxers that are comfy and last well
Won’t wear anything else
very very comfortable
Very comfy, grest fit and love them
for my long walks!!!
Purchased these for my husband. He loved them. Had macpac in the past and these are a heavier weight which is great.
Very quick delivery of my order and very comfortable fit - highly recommended!
Comfy fit and keep constant temperature
Love these undies. I've been a merino convert for a while, but with the other brands. These are my new favourite!!
Great undie. Excellent quality and a good fit for me.
Comfy and warm - good fit!
Hubby loves his icebreaker undies, I don’t love the price.Tried these as a better value alternative and he’s very happy. Will repurchase.
Been a merino boxer convert for a while, but with the other brands. Now that I've tried m365 I won't go back. Much higher quality in both construction and materials. Thank you and well done. These are awesome!
Well made and very snugly!
I am very happy with the boxers. Apart from using them in every day life, I used them for a 2 week hike on the Bibbulmun track in Australia. Great product. No wedgies, very comfortable, and all the usual benefits of merino wool.
Fits better and more cozy than the other brands, and we've tested them all!!
I am very please with 5/6 pairs I have. Unfortunately, one of the pairs was smaller than the rest.
Thanks for the review - glad the other pairs are working well.
We do need to be contacted within our warranty period to assess any issues. At 10 months and after multiple wears, this falls outside that window, so we’re not able to replace or refund.
If there had been an issue from the start, we would have sorted it - timing matters with these things.
Lucy
The best boxers I have ever owned!! Soft, does not bunch up, fits true to size.
Nice feel to the fabric, good customer service and delivery. Only slight challenge is the leg hole is a little tight meaning as you walk they pull down and when you bend over, everyone gets a cheeky little show!
excellent undies.
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