The Underwear Expert: 25 Years of DTC Lessons Most Founders Learn Too Late
Up Arrow Podcast · with Michael Kleinmann · June 16, 2026 · 72 min
Summary
To truly scale a DTC brand, founders must first diagnose and fix foundational business cracks, rather than solely focusing on increased ad spend. This episode emphasizes the critical need for a strong operational infrastructure, accurate financial data, and a customer-centric product experience to support sustainable growth and avoid costly mistakes. Learn how to identify and resolve underlying issues that prevent your marketing efforts from yielding true profitability.
Key takeaways
Before increasing ad spend, conduct a thorough audit of your core e-commerce systems, including your Shopify setup, apps, and tracking, to ensure the infrastructure can support scaling without operational failures.
Validate all financial data (COGS, revenue, gross profit) across platforms to avoid making strategic and profitability decisions based on inaccurate numbers.
Integrate marketing, inventory, and operations planning to prevent growth from being hampered by stockouts or wasted ad spend due to misaligned supply and demand.
Improve conversion rates and reduce returns by auditing customer feedback, ensuring fit accuracy, and refining product data, as even popular products will underperform with poor customer experience.
Shift focus from vanity metrics like ROAS to profit-based metrics such as gross profit and contribution margin, as optimizing for surface-level marketing can erode long-term profitability.
Consider implementing a 3PL partner when fulfillment demands begin to detract from your core business and growth initiatives, ensuring your operational capacity matches your expansion goals.
Avoid deep discounting strategies that train customers to expect lower prices; instead, focus on delivering value and a premium experience to maintain healthy margins.
Michael Kleinmann is the Founder and CEO of Michael Kleinmann Consulting, a bespoke consultancy helping DTC e-commerce and subscription brands grow. He is also the Founder and CEO of Underwear Expert, a men's underwear platform that evolved from a digital media brand into a leading curated subscription service. As a seasoned e-commerce entrepreneur, Michael spent a decade as the President of Freshpair, where he helped build one of the largest online retailers in the underwear category. With over two decades of experience scaling e-commerce and subscription brands, he focuses on brand building, subscriptions, operations, marketing, technology, and customer experience. In this episode… When growth stalls, most brands immediately reach for a new agency, a better campaign, or a larger ad budget. Before pouring more money into an acquisition, leaders have to ask themselves, is the business actually built to scale? The answer is to diagnose the foundation before trying to scale what sits on top of it. E-commerce operations and subscription expert Michael Kleinmann advises brands to validate their data, focus on gross profit over ROAS alone, and audit their systems for issues with sizing, product structure, COGS, and inventory forecasting. He suggests fixing low-hanging operational problems first, not training customers to expect deep discounts, using 3PLs when fulfillment distracts from growth, and ensuring subscription models have the right infrastructure before launching. Sustainable growth comes from strengthening the systems that support marketing, not simply spending more on acquisition. In this episode of the Up Arrow Podcast, William Harris sits down with Michael Kleinmann, Founder and CEO of Michael Kleinmann Consulting and Underwear Expert, to discuss fixing the hidden cracks that stop DTC brands from scaling. Michael shares lessons from early e-commerce, subscription complexity, AI opportunities, inventory forecasting, 3
Before increasing ad spend, conduct a thorough audit of your core e-commerce systems, including your Shopify setup, apps, and tracking, to ensure the infrastructure can support scaling without operational failures.
What does this episode say about supply chain & operations?
Validate all financial data (COGS, revenue, gross profit) across platforms to avoid making strategic and profitability decisions based on inaccurate numbers.
What does this episode say about finance & fundraising?
Integrate marketing, inventory, and operations planning to prevent growth from being hampered by stockouts or wasted ad spend due to misaligned supply and demand.
What does this episode say about founder & leadership?
Improve conversion rates and reduce returns by auditing customer feedback, ensuring fit accuracy, and refining product data, as even popular products will underperform with poor customer experience.
What does this episode say about dtc strategy?
Shift focus from vanity metrics like ROAS to profit-based metrics such as gross profit and contribution margin, as optimizing for surface-level marketing can erode long-term profitability.
