Mike Ettenberg spent 10 years as a firefighter, but was constantly losing or breaking his sunglasses on calls.Frustrated, he decided to take matters into his own hands.Frontline Optics makes durable sunglasses for first responders with a no-questions-asked replacement policy.Despite having "no business experience," the Side Hustle Show listener took Frontline from side hustle to full-time venture, selling over $1M worth of sunglasses along the way. Tune in to episode 649 to learn: How Mike found his first customers The "microinfluencer" strategy that generated consistent sales When he felt comfortable quitting his firefighting day job His plans for the future Full Show Notes: This Firefighter's Side Hustle Grew to $1M in SalesNew to the Show? Get your personalized money-making playlist here!Sponsors: Mint Mobile — Cut your wireless bill to $15 a month! Airbnb — Discover how much your home could be worth! OpenPhone — Get 20% off of your first 6 months! Gusto — Get 3 months free of the leading payroll, benefits, and HR provider for modern small businesses!