This is an ingenious product. It is a small inflatable lantern that can be used as a distress beacon. it is small enough to carry in your pocket but inflates to the size of a small throw pillow. Oh, it is also solar powered so it can work like...forever!
Every city biker knows the Yellow Ones don't stop. They also don't pay attention to your hand signals. Now you can annoy them further with LED signals in your hands. Great at night especially in high traffic areas.