Cart

${cart.item_count} items item
Your Cart is Empty
Your order may be subject to customs fees and duties.

Note: Due to conversion-rate fluctuations, non-US carts may experience slight differences in pricing for bundle/pack products.

Checkout
Continue Shopping
Free Shipping & Returns on US orders
Free shipping on all UK orders over $200
Free shipping on all UK orders over $200
Free Shipping in Canada
Save $15

3 Pack // Black Merino Boxer Briefs

13 reviews

Select Boxer Briefs

Boxer Briefs 1
Size
+

Next

Boxer Briefs 2
Size
+

Next

Boxer Briefs 3
Size
+
Add to Cart
FREE shipping & returns in the US
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
  • Wash in normal to cool temperature setting.
  • Tumble dry low.
  • 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
  • Wash in normal to cool temperature setting.
  • Tumble dry low.
  • 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
  • Wash in normal to cool temperature setting.
  • Tumble dry low.
  • 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
  • Matte black pull tab with sleek
  • inverted zipper
  • Seamless pockets
  • Wash in normal to cool temperature setting.
  • Lay flat to dry.
  • Do not tumble dry.
  • 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
  • Wash in normal to cool temperature setting.
  • Lay flat to dry.
  • Do not tumble dry.
  • 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
  • Wash in normal to cool temperature setting.
  • Lay flat to dry.
  • Do not tumble dry.
  • 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
  • Wash in cool temperature setting.
  • Hang to dry.
  • 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
  • Wash in normal to cool temperature setting.
  • Lay flat to dry.
  • Do not tumble dry.
  • Odor resistant
  • Fast drying
  • Anti-wrinkle
  • Temperature regulating
  • Essential Shorts
    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
  • Wash in cool temperature setting.
  • Hang or lay flat to dry.
  • Do not tumble dry.
  • 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 13 Reviews
    Write a Review Ask a Question
    • Reviews
    • Questions

    Thank you for submitting a review!

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

    Filter Reviews:
    KB
    09/06/2020
    Kevin B.
    Canada Canada
    The best underwear. Ever.

    This is simply the best made, most comfortable, easiest to clean & maintain, least prone-to-getting-stinky underwear you will ever buy. Definitely worth having a week’s supply. Highly recommended.

    • How did you find the fit? Runs SmallSlightly SmallTrue To SizeSlightly BigRuns Big
    Unbound Merino 3 Pack // Black Merino Boxer Briefs Review
    MT
    08/19/2020
    M. Todd Lestage
    United States United States
    Great underwear

    These are the greatest. They can stand up to a Texas summer!

    • How did you find the fit? Runs SmallSlightly SmallTrue To SizeSlightly BigRuns Big
    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!