Former Nasa engineer Mark Rober’s quirky pullover works using an app displaying a log fire, which is downloaded on a phone and then placed inside a jumper to create a flickering fireplace effect.
‘We spent zero dollars on advertising. We just had a YouTube video, and that was it,’ Rober told Wired UK in an interview in August.
‘We did a quarter-million dollars in revenue, just in three weeks.’
You can get your hands on the tasteful knitwear at Morphsuits.co.uk, with prices starting at $40.78.