Now sales are up 300 percent over last year.

After a Warby Parker mobile showroom stationed itself outside of the InnerVision eyewear shop in Philadelphia two Saturdays in a row, owner Cliff Balter got all the motivation he needed to revamp his business in the face of surging online competition, the Minneapolis Star Tribune writes. “I was a little [ticked],” he told the news outlet. “But I thought it was a great idea. It made us go back to work harder.” The article says he then launched his Philly EyeWorks brand alongside the InnerVision shop, creating frame styles that he says are distinguished from Warby Parker’s “contemporary, news-anchor glasses.” He adds that sales for the company, which has eight-full-time employees, are up more than 300 percent from a year ago.

Read more at the Minneapolis Star Tribune