Mack Weldon
New York-based menswear brand offering elevated, comfort-focused men's basics and staples.
Last updated September 15, 2026
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Overview
Mack Weldon is a New York-based menswear brand that blends a timeless sense of style with an obsessive approach to comfort, describing its clothing as menswear you can feel confident in day in and day out. The brand began as a solution to an everyday problem: founder and CEO Brian Berger, faced with a confusing assortment of department-store underwear, set out to improve how essential items like underwear are bought, leading to the creation of the 18-Hour Jersey Boxer Brief. Over the decade-plus since, Mack Weldon has applied the same solutions-oriented approach to reconceive a full range of menswear staples, from anti-odor tees to French terry sweats. Its online store organizes products into categories such as pants, T-shirts, boxer briefs, sweatshirts, and bundles, and highlights offerings including chinos, blazers, and breathable underwear.
History
Mack Weldon began as an extraordinary solution to an everyday problem. Surrounded by a mind-numbing assortment of underwear in the department store—varying in fit and quality—founder and CEO Brian Berger started to wonder how something so essential could be such a pain to buy. Thus, the 18-Hour Jersey Boxer Brief was born. In the decade-plus since, the brand has used the same solutions-oriented approach to reconceive a full range of menswear staples, from anti-odor tees to French terry sweats. As a New York-based brand, Mack Weldon designs its clothes to handle whatever the city throws their way, blending a timeless sense of style with an obsessive approach to comfort.
Products and positioning
Elevated, comfort-focused menswear staples blending timeless style with an obsessive approach to comfort.
18-Hour Jersey Boxer Brief
The product born from the brand's founding effort to improve how essential underwear is bought.
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