HERO KNIT: COAL
HERO KNIT: COAL
HERO KNIT: COAL
HERO KNIT: COAL
HERO KNIT: COAL
HERO KNIT: COAL
HERO KNIT: COAL
HERO KNIT: COAL
HERO KNIT: COAL
HERO KNIT: COAL
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HERO KNIT: COAL

Where breathability meets durability with The Original 3D Pouch.

$40.00 USD $24.00 USD
Size:

Size Guide

  • Underwear
  • Clothing
  • Washing
  • XXS 26″-28″
    66-71cm
  • XS 28″-30″
    71-76cm 
  • S 30″-32″
    76-81cm
  • M 32″-34″
    81-86cm
  • L 34″-36″
    86-91cm
  • XL 37″-40″
    94-101cm
  • XXL 41″-44″
    104-112cm

For underwear, if you are between sizes we recommend choosing the smaller of the two. EG: If you're a 34" waist, go with a Medium.

Boxer Brief

6.5″ / 16.5cm Leg Inseam

Available in the Classic, Classic with Fly, Pro Ionic+™, Infinite Ionic+™, Hero Knit, Entourage, Merino Wool, North Shore Chamois, Hockey Jock

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Trunk

3.5″ / 9cm Leg Inseam

Available in the Classic, Classic with Fly, Pro Ionic+™

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Brief

0″ / 0cm Leg Inseam

Available in the Classic

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Full Length

29″ / 73.5cm Leg Inseam

Available in the Classic, Pro Ionic+™, Merino Wool and Hockey Jock

Shop Full Lengths
  • XXS 26″-28″
    66-71cm
  • XS 28″-30″
    71-76cm 
  • S 30″-32″
    76-81cm
  • M 32″-34″
    81-86cm
  • L 34″-36″
    86-91cm
  • XL 37″-40″
    94-101cm
  • XXL 41″-44″
    104-112cm

For bottoms, if you are between sizes we recommend choosing the larger of the two. EG: If you're a 32" waist, go with a Medium.

PJ Long

30″ / 76cm Leg Inseam


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PJ Short

10″ / 25.5cm Leg Inseam


Shop PJ Short

Joggers

30″ / 76cm Leg Inseam


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Crew Tee

21″ / 53.5cm Chest

32″ / 81cm Length


Shop Tees

Merino Henley

19.5″ / 49.5cm Chest

29″ / 74cm Length


Shop Merino

Color:

The Hero Knit Boxer Brief has three mesh textures that provide optimal air flow throughout your sweatiest pursuits. Quick-dry moisture wicking fabric keeps you feeling fresh. While The Original 3D Pouch keeps everything supported no matter where the day takes you. Featuring a secure fit and vented sport waistband.

Fabric: 91% Polyester, 9% Spandex

MyPakage Pouch Technology™
Highly-breathable mesh
Moisture wicking
Vented waistband for breathability
Chafe-free flatlock stitching

Model shown is 6’0” tall, 175lbs, has a 32” waist and is wearing size medium.

This 6.5" inseam Boxer Brief has a secure feeling fit.

View Size Guide

All BN3TH fabrics are soft and made from a performance stretch fabric. If your measurements are between sizes, select a larger size for a looser fit or a smaller size for a tighter fit.

files/2023-08-30-fit-and-function-merino.svg

Standard Shipping is free for all orders at or over $80 (before taxes and after discounts).

All available shipping options will be visible at checkout. We ship orders within 1-2 business days, but this can increase during promotional periods. Sale items are final sale and cannot be returned for a refund or exchange. For more information, check out our Frequently Asked Questions page.

ENGINEERED COMFORT

WHY WE MADE THIS

Moisture-wicking with enhanced breathability, these active boxer briefs are great for any workout and won’t break the bank. The fabric is made from recycled polyester with no seams near sensitive areas to eliminate chafing while in motion. Get after it!

SUSTAINABILITY MATTERS

OKEO-TEX™ guarantees that our end products are tested and proven free from harmful toxic chemicals.

EXPLORE OTHER COLLECTIONS

CLASSIC
Ultra-soft, naturally-breathable everyday comfort.
Free-Feeling Fit
Casual to Medium Activity

Available in 5 Styles:

Classic BriefsClassic TrunksClassic Boxer BriefsClassic Full LengthsClassic Multi-packs
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PRO
Moisture-wicking mesh, breathable anti-odor support.
Secure-Feeling Fit
Medium to High Activity

Available in 3 Styles:

Pro TrunksPro Boxer BriefsPro Full Lengths
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2N1 SHORTS
Breathable shorts with The Original 3D Pouch.
Free-Feeling Fit
Medium to High Activity

Available in 3 Styles:

Agua Volley 2n1 ShortsRunner's High 2n1 ShortsCruise 2n1 Shorts
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INFINITE
Ultra-soft, breathable luxury with anti-odor technology.
Free-Feeling Fit
Casual-Medium Activity

Available in 4 Styles:

Infinite Boxer BriefsInfinite Full LengthsInfinite T-ShirtsInfinite Long Sleeves
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ENTOURAGE
Quick-drying support with a wider waistband.
Secure-Feeling Fit
Medium to High Activity

Available in 2 Styles:

Agua Volley 2n1 ShortsEntourage
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NORTH SHORE
Highly-breathable bike undershorts.
Secure-Feeling Fit
Medium to High Activity

Available in 2 Styles:

North Shore Bike Liner ShortNorth Shore Bike Liner Bibshort
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MERINO
Temperature-regulating, anti-odor warmth.
Close-to-Skin Fit
High Activity

Available in 3 Styles:

Merino Boxer BriefsMerino Full LengthsMerino Long Sleeves
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INCEPTION
Comfort & support for an active lifestyle.
Free-Feeling Fit
Medium Activity

Available in 2 Styles:

Inception Boxer BriefsInception Multi-packs
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OUTSET
Everyday comfort using soft, US-grown cotton.
Free-Feeling Fit
Casual to Medium Activity

Available in 2 Styles:

Outset Boxer BriefsOutset Multi-packs
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