If they don’t make you feel better, you get your money back.
While they were developing the technology for SPY glasses, the San Diego lab team referred to them as “happy glasses” because that was the goal: Lenses that would somehow manipulate long-wave blue light to cause a positive chemical response in the wearer. When they took the glasses to market, they decided to stick with the name – even copyrighting it. And they back the name up with a guarantee. "Within 14-days for whatever reason if you're unhappy with them, you don't think they make you happy, you can return it to us, no questions asked," says SPY product development director Juliette Koh.