Fashion designer Diana Eng has created a beautiful retroflective scarf. She says:
I love the lightweight scarves everyone is wearing indoors, outdoors,
and in many different configurations. So I decided to create my own
with subtle stripes of tiny retroreflective lenses on the fabric. What
normally appear as grey stripes, illuminates with reflected light when
exposed to a direct light source. It makes people do a double take to
check out what you are wearing.
See a video of the scarf's reflective properties.
See more Diana Eng posts on Boing Boing.