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3 Pack // Black Merino Boxer Briefs

11 reviews

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FREE shipping in Canada
Sizing Guide

Sizing Chart

  • In Inches
  • In CM
S M L XL XXL
Neck 14-14.535.5-37 15-15.538-39.25 16-16.540.5-42 17-17.543-44.5 18-18.545.75-47
Chest 37-3894-96.5 39-4099-101.5 41-42104-106.5 43-44109-112 45-46114.5-117
Waist 31-3279-81 33-3484-86.5 35-3689-91.5 37-3894-96.5 39-4099-101.5
Sleeve Length 32-3381-84 33-3484-86.5 34-3586.5-89 35-3689-91.5 36-3791.5-94

How to Measure

Unbound How To
- Details
    + Technical Info
      + Care Instructions
        + Shipping and returns

        Shipping and Returns

        Shipping Info

        USA
        USPS: 7-9 business days
        DHL:  1-3 business days

        Canada
        Canada Post: 3-7 business days

        International
        Standard: 7-14 business days
        DHL: 2-6 business days

        *All times include handling time


        Full refund or exchange within 90 days

        You can return clothing that you purchased directly from unboundmerino.com as long as it is unworn, unwashed, and in the original condition in which it was delivered in. We are happy to offer a full refund or exchange for any reason within 90 days from the ship date.

        Please fill out the RETURN SLIP that came with your order, include it with your package and send everything to the address listed on your return slip.

        • Exchanges are subject to availability. A refund will be processed if the product you requested is unavailable.
        • Please note that all socks and underwear are FINAL SALE and can not be returned or exchanged for sanitary reasons.

        If you are sending from outside of Canada and need to declare the value of the order, please mark 'RETURN ITEM' with a declared value of $1.


        If you do not have a RETURN SLIP and need to print one click here.

        For answers to any additional questions you may have, please visit our Help Center here.

        As featured in

        Meticulously crafted for your comfort

        Packing for any trip should start with the perfect base layer. When designing our Merino wool boxer briefs, we were uncompromising down to every last detail. That’s why the ultra-fine Merino wool and reinforced stitching found here is the exact same Merino wool and stitching we use to make our Merino wool T-shirts.  We then went the extra step of perfectly blending each Merino fiber with Nylon and Spandex for extra durability and a more snug fit. You’ll also find a tag-free, ultra-soft waistband that prevents rubbing and irritation – definitely a plus for long treks. This is Merino wool underwear designed to take you places.

        + Moisture wicking
        + Odor resistant
        + Antibacterial
        + No itchy label
        + 84% Merino wool, 12% nylon and 4% spandex
        Add to cart
        WHAT'S INCLUDED
        Merino Wool T-Shirt
        V-Neck T-Shirt
        Boxer Briefs
        Merino Wool Socks
        Merino Wool Crew Socks
        Pocket Tank Top
        Compact Travel Hoodie
        Long Sleeve
        Raglan Crew Sweatshirt
        Women's Merino T-Shirt
        Classic Button-Down
        Merino/Polyester T-Shirt
        Essential Shorts
        Merino Crew Neck T-shirt - 175
        Merino Wool T-Shirt
        Merino Wool T-Shirt
        • Moisture wicking
        • Odor resistant
        • Antibacterial
        • Anti-wrinkle
        • Core Temperature Control
        • Reinforced stitching
        • 100% ultra-fine 17.5 micron, 190g/m2 Merino wool
      • 100% Merino wool jersey
      • Ultra-fine 17.5 micron
      • 190g/m2
      • Wash in normal to cool temperature setting.
      • Lay flat to dry.
      • Do not tumble dry.
      • Odor resistant
      • Fast drying
      • Anti-wrinkle
      • Temperature regulating
      • V-Neck T-Shirt
        Merino Wool T-Shirt
        • Moisture wicking
        • Odor resistant
        • Antibacterial
        • Anti-wrinkle
        • Core Temperature Control
        • Reinforced stitching
        • 100% ultra-fine 17.5 micron, 190g/m2 Merino wool
      • 100% Merino wool jersey
      • Ultra-fine 17.5 micron
      • 190g/m2
      • Wash in normal to cool temperature setting.
      • Lay flat to dry.
      • Do not tumble dry.
      • Odor resistant
      • Fast drying
      • Anti-wrinkle
      • Temperature regulating
      • Boxer Briefs
        Merino Wool Boxer Briefs
        • Reinforced stitching
        • Comfort stretch band
        • Moisture wicking
        • Odor resistant
        • Antibacterial
        • 84% Merino wool, 12% nylon and 4% spandex
      • 84% Merino wool, 12% nylon and 4% spandex
      • Ultra-fine 18.5 micron
      • 180g/m2
      • Woven elastic waistband
      • Odor resistant
      • Fast drying
      • Anti-wrinkle
      • Temperature regulating
      • Merino Wool Socks
        Merino Wool Socks
        • One-Size-Fits-All for foot sizes 6 to 13
        • Made with a custom blend of Merino Wool (68%), Nylon (29%) and Lycra Spandex (3%) for comfort and durability
        • Odor resistant
        • Antibacterial
        • Core Temperature Control
        • Breathable vents
      • Made with a custom blend of Merino Wool (68%), Nylon (29%) and Lycra Spandex (3%) for comfort and durability
      • Odor resistant
      • Fast drying
      • Anti-wrinkle
      • Temperature regulating
      • Merino Wool Crew Socks
        Merino Wool Crew Socks
        • One-Size-Fits-All for foot sizes 6 to 13
        • Made with a custom blend of Merino Wool (68%), Nylon (29%) and Lycra Spandex (3%) for comfort and durability
        • Odor resistant
        • Antibacterial
        • Core Temperature Control
        • Breathable vents
      • Made with a custom blend of Merino Wool (68%), Nylon (29%) and Lycra Spandex (3%) for comfort and durability
      • Odor resistant
      • Fast drying
      • Anti-wrinkle
      • Temperature regulating
      • Pocket Tank Top
        Pocket Tank Top
        • Moisture wicking
        • Odor resistant
        • Antibacterial
        • Anti-wrinkle
        • Core Temperature Control
        • Reinforced stitching
        • 100% ultra-fine 17.5 micron, 190g/m2 Merino wool
      • 100% Merino wool jersey
      • Ultra-fine 17.5 micron
      • 190g/m2
      • Odor resistant
      • Fast drying
      • Anti-wrinkle
      • Temperature regulating
      • Compact Travel Hoodie
        Compact Travel Hoodie
        • Odor resistant
        • Temperature regulating
        • Moisture wicking
        • Seamless pockets
        • Sleek black YKK inverted zipper
        • 97% ultra-fine Merino wool / 3% elastane for durability and stretch
        • 21.5 micron / 250 GSM
      • 97% ultra-fine Merino wool / 3% elastane for durability and stretch
      • 21.5 micron
      • 250 GSM
      • Light and breathable
      • Odor resistant
      • Fast drying
      • Anti-wrinkle
      • Temperature regulating
      • Long Sleeve
        Long Sleeve
        • Moisture wicking
        • Odor resistant
        • Antibacterial
        • Anti-wrinkle
        • Core Temperature Control
        • Reinforced stitching
        • 100% ultra-fine 17.5 micron, 190g/m2 Merino wool
      • 100% Merino wool jersey
      • Ultra-fine 17.5 micron
      • 190g/m2
      • Odor resistant
      • Fast drying
      • Anti-wrinkle
      • Temperature regulating
      • Raglan Crew Sweatshirt
        Raglan Crew Sweatshirt
        • Odor resistant
        • Temperature regulating
        • Moisture wicking
        • French terry interior for softness and comfort
        • 97% lightweight ultra-fine Merino wool for light packing and breathability
        • 3% elastane added for durability and stretch
        • 21.5 micron / 250 GSM
      • 97% lightweight ultra-fine Merino wool for light packing and breathability
      • 3% elastane added for durability and stretch
      • 21.5 micron
      • 250 GSM
      • Light and breathable
      • Odor resistant
      • Fast drying
      • Anti-wrinkle
      • Temperature regulating
      • Women's Merino T-Shirt
        Women's Merino T-Shirt
        • Moisture wicking
        • Odor resistant
        • Antibacterial
        • Anti-wrinkle
        • Core Temperature Control
        • Reinforced stitching
        • 100% ultra-fine 17.5 micron, 190g/m2 Merino wool
        Classic Button-Down
        Classic Button-Down
        • Odor resistant
        • Light and breathable
        • Fast drying
        • 54% premium Merino wool
        • 46% organic cotton
        • 146gsm
        • Cross-woven for breathability
      • 54% Merino wool, 46% organic cotton
      • 146gsm
      • Cross-woven for breathability
      • Light and breathable
      • Odor resistant
      • Fast drying
      • Wrinkle resistant
      • Perfect for packing
      • Merino/Polyester T-Shirt
        • Antibacterial
        • Moisture wicking
        • Odor resistant
        • Anti-wrinkle
        • Core Temperature Control
        • Ultra-fine 17.5 micron Merino/Poly blend
        • 56% Merino, 44% Polyester - 190g/m2
      • 56% Merino, 44% Polyester
      • 17.5 micron
      • 190g/m2
      • Odor resistant
      • Fast drying
      • Anti-wrinkle
      • Temperature regulating
      • Essential Shorts
        • Anti-wrinkle
        • Water Repellent
        • Hidden Back Zipper Pocket
        • 2-way Comfort Stretch
        • 48% Merino wool, 48% Cotton, 4% Spandex
        • 8 1/2" inseam length
      • 48% Merino wool, 48% Cotton, 4% Spandex
      • 8 1/2" inseam length
      • Anti-wrinkle
      • Water repellent
      • 2-way comfort stretch
      • Odor resistant
      • Merino Crew Neck T-shirt - 175
        Merino Wool T-Shirt
        • Moisture wicking
        • Odor resistant
        • Antibacterial
        • Anti-wrinkle
        • Core Temperature Control
        • Reinforced stitching
        • 100% ultra-fine 17.5 micron, 175g/m2 Merino wool
        • 100% Merino wool jersey
        • Ultra-fine 17.5 micron
        • 100% ultra-fine 17.5 micron, 175g/m2 Merino wool
      • Wash in normal to cool temperature setting.
      • Lay flat to dry.
      • Do not tumble dry.
      • Odor resistant
      • Fast drying
      • Anti-wrinkle
      • Temperature regulating
      • What People Are Saying

        Customer Reviews
        4.8 Based on 11 Reviews
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        • Reviews
        • Questions

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        Your input is very much appreciated. Share it with your friends so they can enjoy it too!

        Filter Reviews:
        JH
        06/16/2020
        Jeff H.
        United States United States
        Awesome undies

        Excellent pair of undies. Run a bit small so you may want to size up.

        JK
        06/09/2020
        Jeff K.
        United States United States
        Awesome Undies

        I bought a 3-pack of the Black Merino Boxer Briefs and they are truly awesome. Cool and comfortable.

        RS
        05/28/2020
        Richard S.
        United States United States
        Great Underwear!

        I utilized this underwear on a recent trip to Peru. The garments were very comfortable and super durable. I would highly recommend them as essential travel wear!

        SA
        05/27/2020
        Saud A.
        United States United States
        Comfortable underwear

        I really like the underwear, however, after several washes i got some threads out and one of the underwear got ribbed a little when I tried to cut the thread

        JS
        05/27/2020
        James S.
        United States United States
        Don’t leave home without these. ..

        These were everything they reported to be. A must have for every traveler with limited access to a washing machine.