Best Smartwool Underwear Briefs for Men of 2026

John Zimmer Avatar
John Zimmer
Last Updated: 3 Feb 2026

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Smartwool's range of underwear briefs offers comfort and functionality for men. Made from high-quality materials, these briefs are designed to provide a snug fit and maximum support. The breathable fabric helps to regulate body temperature, while the moisture-wicking properties keep you dry all day long. With a range of stylish designs and colours to choose from, Smartwool's underwear briefs are a great addition to any man's wardrobe. Whether you're hitting the gym or simply going about your day, these briefs are sure to keep you comfortable and confident.

At a Glance: Our Top Picks

Smartwool Men's Merino Boxer Briefs, Deep Navy Cover #TOP 1
Smartwool Men's Merino Boxer Briefs, Deep Navy
ftb score rating icon 9.9
Smartwool Men's Lightweight Boxer Briefs Cover #TOP 2
Smartwool Men's Lightweight Boxer Briefs
ftb score rating icon 9.8
Smartwool Men's Merino Boxer Briefs in Black Cover #TOP 3
Smartwool Men's Merino Boxer Briefs in Black
ftb score rating icon 9.6

Top 3 Smartwool Underwear Briefs for Men

#TOP 1

Smartwool Men's Merino Boxer Briefs, Deep Navy

SW016998
Deep Navy
Smartwool Men's Merino Boxer Briefs, Deep Navy Cover
Smartwool Merino Wool Men's Boxer Shorts, Men's Briefs for Sports, Base Layer Thermal Underwear Running Pants & Ski Pants, Lightweight & Breathable Natural Merino Men's Clothing - Deep Navy, M

The Smartwool Merino Boxer Briefs are designed with a slim fit that follows your body's contours, ensuring a comfortable wear. The lightweight Merino jersey fabric, featuring a recycled nylon core, keeps the 100% Merino wool next to your skin for a soft touch. With flatlock seam construction, these briefs minimise chafing, making them ideal for all-day use. Additionally, the fully functional fly adds convenience, allowing for easy access when needed.

What We Like
Comfortable slim fit
Soft Merino wool next to skin
Minimises chafing
Convenient functional fly
#TOP 2

Smartwool Men's Lightweight Boxer Briefs

SW016996
Medium Gray Heather
Smartwool Men's Lightweight Boxer Briefs Cover
Smartwool Men's Boxer Brief, Medium Gray Heather, Large

The Smartwool Men's Boxer Briefs are designed for a snug fit that follows your body's contours, ensuring comfort throughout the day. Made from lightweight Merino jersey fabric with a recycled nylon core, they offer enhanced durability while keeping soft, 100% Merino wool next to your skin. The flatlock seam construction reduces chafing, allowing for all-day wear without irritation. Additionally, these boxer briefs feature a fully functional fly for added convenience, making them a practical choice for any wardrobe.

What We Like
Comfortable slim fit
Durable Merino wool fabric
Reduces chafing
Functional fly
#TOP 3

Smartwool Men's Merino Boxer Briefs in Black

SW016998
Black
Smartwool Men's Merino Boxer Briefs in Black Cover
Smartwool Men's Merino Boxer Brief, Black, X-Large

The Smartwool Merino Boxer Briefs offer a slim fit that contours to your body, ensuring comfort throughout the day. Made from lightweight Merino jersey fabric, these briefs keep you feeling great by using a recycled nylon core while placing soft Merino wool next to your skin. The flatlock seam construction helps to minimise chafing, making them ideal for active wear. Plus, the fully functional fly provides added convenience, allowing for easy adjustments when needed.

What We Like
Comfortable slim fit
Lightweight Merino fabric
Minimises chafing
Convenient functional fly
Soft waistband for comfort
Buying Guide Image
Editor's Notes

During our Smartwool underwear brief for men research, we found 12 Smartwool underwear brief for men products and shortlisted 3 quality products. We collected and analyzed 4,273 customer reviews through our big data system to write the Smartwool underwear briefs for men list. We found that most customers choose Smartwool underwear briefs for men with an average price of £20.00.

The Smartwool underwear briefs for men are available for purchase. The top 3 picks range in price from a low of £24.00 to a high of £35.00, find the one that fits your budget.

Written by
John Zimmer Avatar

John Zimmer is a truly professional writer on findthisbest.com. He has specialized in writing content a wide variety of fields for over a decade. Since 2011, he has been using his expertise and extensive experience to write content for online shopping guide websites. In addition to writing for findthisbest.com, he has appeared in publications such as The Spruce, Wirecutter and Bestbuy.