Experience unparalleled energy efficiency with Solace™ Solar Festoon Lights that GLOW WITH 2X THE ALLURE of regular solar string lights … GUARANTEED. Illuminate your evenings without the worry of rising electricity bills, embracing the sun’s power for a brighter, cost-effective tomorrow. Our #1 priority here is your happiness. If you don’t fall in love with your new lights after 90 nights, we will REFUND YOU 100% OF YOUR PURCHASE PRICE – no questions asked. Happiness guaranteed.