MERINO FULL LENGTH: BLACK
MERINO FULL LENGTH: BLACK
MERINO FULL LENGTH: BLACK
MERINO FULL LENGTH: BLACK
MERINO FULL LENGTH: BLACK
MERINO FULL LENGTH: BLACK
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MERINO FULL LENGTH: BLACK

Temperature-regulating, anti-odor warmth with The Original 3D Pouch.

$115.00 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


Shop PJ Long

PJ Short

10″ / 25.5cm Leg Inseam


Shop PJ Short

Joggers

30″ / 76cm Leg Inseam


Shop Joggers

Crew Tee

21″ / 53.5cm Chest

32″ / 81cm Length


Shop Tees

Merino Henley

19.5″ / 49.5cm Chest

29″ / 74cm Length


Shop Merino

Color: 1 Color
Pattern: 2 Patterns

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Able to endure the harshest of conditions, yet also breathe with you when things warm up. Merino Wool provides that extra layer of warmth and comfort but won’t stink or hold sweat when your body produces heat. The Responsible Wool Standard fabric is naturally temperature-regulating and feels gentle against your skin, plus offers anti-microbial properties.

Fabric: 87% Merino wool, 13% Nylon; 200 GSM; 18.5 Micron

MyPakage Pouch Technology™
Naturally breathable
Temperature regulating
Certified Responsible Wool Standard fabric
Premium no-roll waistband
Chafe-free flatlock stitching

This 28" inseam Full Length Bottom has a next-to-skin feeling fit.

View Size Chart

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.

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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. For more information, check out our Frequently Asked Questions page.

ENGINEERED COMFORT

WHY WE MADE THIS

What’s not to love about the naturally temperature-regulating properties of Merino Wool? And we set out to make ours premium. Spun from responsibly sourced wool, the fabric is 200 GSM with a 18.5 micron count. So long after your outerwear is on the drying rack, you’ll be feeling fine fireside with our award-winning Merino Wool.

SUSTAINABILITY MATTERS

These are made from sustainably-sourced Responsible Wool Standard fabric which is musling-free.
OKEO-TEX™ guarantees that our end products are tested and proven free from harmful toxic chemicals.
The waistband is GRS-certified, as the elastic comes from post-consumer recycled Polyester.

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:

Entourage Boxer BriefsAgua Volley 2n1 Shorts
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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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