What Mack Weldon does

Mack Weldon is a direct-to-consumer men's essentials brand founded in 2012 by Brian Berger and headquartered in New York, USA. The company sells premium men's apparel — including underwear, t-shirts, polos, sweatshirts, pants, outerwear, and accessories — primarily through its own Shopify-powered e-commerce website, with a wholesale inquiry channel and store locator indicating selective omnichannel presence. The product portfolio is organized around a portfolio of proprietary fabric technologies: the foundational 18-Hour Jersey (cotton/modal blend), AIRKNITx (lightweight moisture-wicking performance fabric), SILVER (permanent anti-odor luxury fabric), ACE French Terry (micro-brushed sweats), Tech Linen with COOLMAX, STEALTH (second-skin performance), WARMKNIT (lightweight warmth), and Tech Cashmere. These engineered fabrics — combined with design upgrades such as the $198 ACE Blazer that bridges comfort and professional polish — form the core technical and brand differentiation in a crowded men's basics category.

The company's business model is direct product sales through its DTC storefront at price points ranging from $23 for entry-level Mystery Boxer Briefs to $248 for the WARMKNIT Air Blazer, with bundle discounts of approximately 10%, a 20% first-order discount above $125, and free shipping at $150. Customer retention is supported by the MW Rewards loyalty program (Blue/Silver/Black tiers) tied to purchases, reviews, and referrals, plus a $20-for-$20 referral program for acquisition. Marketing is distributed across organic social channels (Instagram, Facebook, YouTube, Pinterest, Twitter/X), email, and selective influencer collaborations, including a summer Terry Cloth campaign with The Points Guy's Nicky Kelvin and a co-branded ACE Sweatshirt partnership with Juice Press. The primary customer segment is men seeking elevated, versatile basics suitable for remote work, travel, and casual-to-polished occasions.

Mack Weldon has raised approximately $15.9 million in disclosed funding across six rounds from 2014 through 2021, with investors including KarpReilly (2016 Series B lead), Bridge Investments, Lyrical Partners, Mistral Equity Partners, RiverPark Ventures, North Castle Partners (2019), and Rx3 Growth Partners (2021). The company is privately held, founder-led (Brian Berger as Founder & CEO), and operates with 11–50 employees, with no disclosed revenue figures, no parent company, and no M&A activity in the provided data.

Name

Mack Weldon

Legal name

Mack Weldon

Website

https://mackweldon.com

Company type

Private

Founded year

2012

Operating status

Operating

Headcount range

11–50 employees

Short description

Mack Weldon is a direct-to-consumer men's essentials brand founded in 2012, selling premium underwear, tops, bottoms, and outerwear through its Shopify-powered e-commerce platform, organized around eight proprietary fabric technology collections including 18-Hour Jersey, AIRKNITx, and SILVER anti-odor.

Ownership category

akta.pro rank

Headquarters

HQ city

New York

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2C

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Marketing or Sales, Personnel, Operations, Technology or R&D

Revenue model

1. Direct Product Sales: Primary revenue stream from direct-to-consumer sales of men's apparel including underwear, tops, bottoms, and accessories through e-commerce platform. Products sold at various price points with bundle and save discounts.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels8 records

Core offering

Mack Weldon designs and sells direct-to-consumer men's essentials — including underwear, t-shirts, polos, sweatshirts, pants, shorts, and accessories — built around proprietary engineered fabrics such as 18-Hour Jersey, AIRKNITx, SILVER anti-odor, ACE French Terry, and Tech Linen with COOLMAX. The brand sells primarily through its own e-commerce site at unit prices ranging from $23 to $248, supplemented by bundle savings, a tiered loyalty program, and limited wholesale distribution.

Product overview

Mack Weldon is a direct-to-consumer men's basics brand founded in 2012 that began with its bestselling 18-Hour Jersey Boxer Brief and has expanded into a comprehensive men's essentials platform. The company offers products across four core categories: underwear (boxer briefs, boxers, trunks, briefs), tops (t-shirts, polos, button-ups, hoodies, sweaters), bottoms (sweatpants, shorts, pants, chinos), and accessories (socks, bags, belts). The product portfolio is organized around signature fabric collections including ACE (French terry sweats), AIRKNITx (lightweight breathable performance), SILVER (luxury anti-odor), Tech Linen (COOLMAX-powered comfort), and WARMKNIT (lightweight warmth). The company also offers the ACE Blazer, a distinctive sweatshirt-style blazer blending comfort with polished appearance, and various bundle options. Key products include the foundational 18-Hour Jersey Boxer Brief, Pima Crew Neck T-Shirt, Stealth Pro Boxer Brief, Terry Cloth Johnny Collar Polo, and the Heavyweight Slub Polo.

Differentiator

Problem solved

Functional benefit

Products and services

• 18-Hour Jersey Boxer Brief The founding product of Mack Weldon, a bestselling boxer brief made from cotton and modal blend fabric, designed for extended 18-hour comfort and odor resistance. Targeted at men seeking elevated everyday underwear.
• ACE Blazer A sweatshirt-style blazer made of stretchy French terry (95% cotton, 5% spandex) priced at $198, combining comfort with a polished appearance suitable for remote workers and travelers.
• ACE Collection French terry sweats collection including ACE Sweatpant, ACE Sweatshort, ACE Crew Neck Sweatshirt, ACE Hoodie, and ACE Cargo Sweatshort, made from micro-brushed French terry for loungewear and casual wear.
• AIRKNITx Collection Light-as-air breathable essentials featuring moisture-wicking properties and targeted cool zones, including AIRKNITx Boxer Brief, AIRKNITx Trunk, and AIRKNITx Brief for everyday performance wear.
• SILVER Collection Luxury anti-odor collection including Silver Boxer Brief, Silver Crew Neck T-Shirt, Silver HD Boxer Brief, Silver Jersey Button Up, Silver Pique Button Up, and Silver Denim jeans, featuring permanent anti-odor technology.
• Tech Linen Collection Linen apparel upgraded with COOLMAX tech, including Tech Linen Hoodie, Tech Linen Quarter-Zip, Tech Linen Button Up Sweater Polo, Tech Linen Johnny Collar Sweater Polo, Tech Linen Sweater Polo, and Tech Linen Pleated Short for breathable warm-weather wear.
• Pima Crew Neck T-Shirt Premium t-shirt made from 100% Pima cotton, priced at $48, targeted at men seeking elevated everyday basics.
• WARMKNIT Collection Warmth-without-the-weight collection including WARMKNIT Waffle Long Sleeve Henley, WARMKNIT Waffle Long Sleeve Crew, WARMKNIT Sherpa Fleece, WARMKNIT Wool Crew Neck Sweater, and WARMKNIT AIR Blazer for cool-weather layering.
• Terry Cloth Collection Terry cloth polo and shorts including Terry Cloth Johnny Collar Polo priced at $88 and Terry Cloth Short, featuring highly packable terry cloth material for summer wear and travel.
• Heavyweight Slub Polo Heavyweight polo shirt priced at $98 with distinctive slub texture, designed as an elevated everyday staple for men.
• Stealth Pro Boxer Brief Second-skin performance boxer brief priced at $38, using STEALTH fabric technology for maximum flexibility, support, and everyday comfort.
• Radius Flex Jogger Lightweight and weather-resistant jogger priced at $118, designed for versatile everyday and travel wear.
• Stretch Twill Chino Collection Chino pants and shorts including Stretch Twill Chino Short (9-inch and 7-inch), Stretch Twill Drawstring Chino Short, and Stretch Twill Chino in Classic Fit and Relaxed Fit, priced from $108 to $138.
• Linen Collection 100% linen shirts and apparel including Linen Drawstring Short, Linen Drawstring Pant, Linen Button Up, Linen Camp Shirt, and Linen Jersey products for warm weather comfort.
• Twill Harrington Jacket Stretch twill jacket priced at $118 with streamlined silhouette, serving as a versatile outerwear piece.
• Bundle & Save multi-packs Pack bundles offering up to 10% off essentials including underwear packs, sock packs, and apparel packs for customers to build custom bundles.

Quantifiable outcome

• 100K+ five-star reviews

Named customers1 record

Segments1 record

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature8 records

Partnerships

One partnership is on record.

• Juice PressminorStrategic or Co-development PartnerCollaborative product partnership producing the Mack Weldon x Juice Press ACE Sweatshirt, a limited edition co-branded item combining both brands' aesthetics.

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Buck Mason: Men's essentials DTC brand focused on elevated basics, tees, and casualwear; competes with Mack Weldon on premium quality, classic styling, and online-first men's wardrobe building.
• Rhone: Men's performance apparel DTC brand with proprietary technical fabrics (e.g., MASH, Swift); overlaps with Mack Weldon's AIRKNITx and Tech Linen collections for performance-driven men's basics.
• Tommy John: DTC men's underwear, undershirts, and basics brand with proprietary fabric tech; closest analog to Mack Weldon in product range, premium pricing, and technology-driven storytelling.
• Vuori: Premium men's and women's activewear and everyday performance apparel DTC brand; competes with Mack Weldon's WARMKNIT, ACE, and performance categories for share of men's everyday premium basics.
• Bonobos: Men's apparel DTC brand specializing in better-fitting essentials, pants, and casual clothing; competes with Mack Weldon's bottoms and tops expansion into work-from-anywhere apparel.
• SAXX Underwear: Premium men's underwear DTC brand best known for its BallPark Pouch; competes directly with Mack Weldon's boxer brief assortment and similar premium positioning.
• MeUndies: Direct-to-consumer men's and women's underwear and basics brand with subscription model and proprietary fabrics; competes head-to-head with Mack Weldon in the DTC underwear and everyday essentials category.

Broad incumbents

• True Religion: Premium denim and casualwear brand with growing DTC men's essentials presence; overlaps with Mack Weldon's premium casual bottoms and tops in department-store and outlet channels.
• Lululemon: Global premium athletic and casual apparel incumbent with strong men's category growth; competes with Mack Weldon in men's performance basics at scale with far larger marketing budget.
• Calvin Klein (PVH): Heritage mass-premium underwear and basics brand under PVH; competes with Mack Weldon in men's underwear and t-shirts across department stores, DTC, and wholesale.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks4 records

Key highlights7 records

Customer concentration

• Xx.com/mackweldon
• YouTubeyoutube.com/user/mackweldon/featured
• Facebookfacebook.com/102556986545296
• Instagraminstagram.com/mackweldon
• Pinterestpinterest.com/mackweldon

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds6 records

Investors7 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Mack Weldon