Over a nine-year period, Spencer and Jeff Jan grew Solo Stove from a DIY project into a 9-figure brand. Their original idea was modest: work a four-hour week and earn a passive income from a DTC camping stove, which was easy to use and as sleek as a spaceship. When they launched the business in 2010, the brothers lived thousands of miles away from each other: Spencer in Shanghai, where he located the manufacturer for the stove, and Jeff in Dallas, where he managed logistics out of his garage. Using all the tools at their disposal—Kickstarter, Amazon, and Starbucks for office meetings—the brothers grew the brand to where it attracted a 9-figure acquisition. Which actually happened twice—making them both wealthy enough to enjoy a 0-hour work week.




This episode was produced by Carla Esteves, with music by Ramtin Arablouei.

Edited by Neva Grant, with research help from Casey Herman.

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Solo Stove: Spencer and Jeff Jan

Guy Raz interviews the world’s best-known entrepreneurs to learn how they built their iconic brands. In each episode, founders reveal deep, intimate moments of doubt and failure, and share insights on their eventual success.&nbsp;How I Built This&nbsp;is a master-class on innovation, creativity, leadership and how to navigate challenges of all kinds. New episodes on Mondays and Thursdays. Listen to How I Built This on the Wondery App or wherever you listen to your podcasts. You can listen 1-week early and to all episodes ad-free on Wondery+. Join Wondery+ in the Wondery App or on Apple Podcasts. Start your free trial by visiting https://wondery.com/links/how-i-built-this now. Get your How I Built This merch at WonderyShop.com/HowIBuiltThis.

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Growing up in the ‘80s in New Jersey, Marc Ecko loved hip hop, graffiti art, and painting t-shirts for friends. His passion soon bloomed into a full-on business: ECKO UNLTD, a streetwear brand known for its iconic rhino logo. By the 1990’s, the brand had become a cultural force, but not without its share of bad deals, daunting debt, and a close brush with bankruptcy. 

Eager to keep innovating, Marc launched COMPLEX, a media company hyper-focused on “convergence” culture: hip hop, fashion, sports and pop culture. Within a decade, COMPLEX had weathered the financial crisis, and emerged profitable. After being bought–and sold–by Buzzfeed, it was purchased by a video shopping company for over $100 million, and ECKO UNLTD just celebrated its 30th anniversary. 

This episode was researched and produced by Katherine Sypher with music composed by Ramtin Arablouei. It was edited by Neva Grant. Our audio engineers were Gilly Moon and Kwesi Lee.

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ECKO UNLTD and COMPLEX: Marc Ecko

Tarte cosmetics founder and CEO Maureen Kelly joins Guy on the Advice Line, where they answer questions from three early-stage founders about their marketing strategies.

Today we meet Kristina, who’s designed sweat-wicking underwear that's both functional and stylish. Then Ashley, who recently launched a line of chemical-free hair care products. And Marcelle, the owner of an international career coaching service.

If you’d like to be featured on a future Advice Line episode, leave us a one minute message that tells us about your business and a specific question you’d like answered. Send a voice memo to hibt@id.wondery.com or call 1-800-433-1298.

And check out Tarte’s founding story from Maureen’s first appearance on the show in 2023.

This episode was produced by Kerry Thompson with music by Ramtin Arablouei. It was edited by John Isabella. Our audio engineer was Robert Rodriguez.

You can follow HIBT on X & Instagram and sign up for Guy's free newsletter at guyraz.com.







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Advice Line with Mauren Kelly of Tarte Cosmetics

Brothers Dick and Peter Dreissigacker used their experience as Olympic-level rowers to build a rowing machine that captured the sensation of being on the water. Initially made of bicycle parts in a Vermont barn, the machines had a limited market at first: mostly rowing clubs and schools that competed in the sport. But in the 2000’s, business began to take off when Greg Glassman, the founder of Crossfit, began putting the machines into his gyms. Today Concept2 sells rowing machines to thousands of gyms and teams around the world, plus rowers, stationary bikes and skiing machines for people who train at home.




This episode was produced by J.C. Howard, with music by Ramtin Arablouei

Edited by Neva Grant, with research help from Katherine Sypher.




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Concept2 Rowing Machines: Dick and Peter Dreissigacker

Sun Bum co-founder Tom Rinks joins Guy on the Advice Line, where they answer questions from three early-stage founders about refining their brand identities. 

Today we meet Wendy, a former comedian whose sugar scrub takes the sticky-icky off your hands. Then Allyson, who went from producing reality television to trucker hats designed for women’s heads. And Zephyrus, an opera performer with a new way for kids to hear their favorite bedtime stories.

If you’d like to be featured on a future Advice Line episode, leave us a one minute message that tells us about your business and a specific question you’d like answered. Send a voice memo to hibt@id.wondery.com or call 1-800-433-1298.

And be sure to listen to Sun Bum’s founding story as told by Tom on the show in 2023.

This episode was produced by Casey Herman with music by Ramtin Arablouei. It was edited by John Isabella. Our audio engineer was Cena Loffredo.

You can follow HIBT on X & Instagram and sign up for Guy's free newsletter at guyraz.com.

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Advice Line with Tom Rinks of Sun Bum

The Theragun was born out of a late-night experiment with a Makita jigsaw, by a man searching desperately for pain relief in his arm. Jason Wersland was studying to become a chiropractor when he got injured in a motorcycle accident. While casting about for solutions, he discovered that the percussive massage from his jury-rigged power tool helped ease his pain and increase range of motion.




Jason soon discovered the device worked on his patients, so he MacGyvered hundreds more jigsaws, initially using fence posts and cat toys as add-ons.  Over time, with endorsements from top athletes and celebrities, Jason grew his business into Therabody, a wellness brand with revenue in the hundred of millions of dollars.




This episode was produced by Chris Maccini with music by Ramtin Arablouei.

Edited by Neva Grant, with research from Melia Agudelo. Our audio engineers were Gilly Moon and Robert Rodriguez.

You can follow HIBT on X & Instagram, and email us at hibt@id.wondery.com.

And sign up for Guy’s free newsletter at guyraz.com 

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Solo Stove: Spencer and Jeff Jan

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