Fashion is all about how things look, sure, but it doesn't have to be about how they look all the time. This Retroreflective Scarf designed by Diana Eng is definitely striped, even if it doesn't always appear that way.
The scarf is actually covered with individual strips of tiny retroreflective lenses which fling light back at the source it came from. The result is that when the scarf is hit with varying intensities of different lights, it will glow a variety of colors that appear differently to anyone who happens to be looking. Its strips are less a quality of the scarf than a subjectively observed event, triggered by a flashlight or a camera's flash.
If that seems like the kind of thing you'd be into (scarves in general, or retroreflective ones specifically) you can pick up one of these bad boys off Eng's site for just $60 and you'll have the coolest scarf around every single time the light changes. [Diana Eng via Laughing Squid]