As any cyclist knows, biking at night can be an extreme sport. Bright-colored clothing can help, but to really make sure drivers will notice of you before you're roadkill, a CycLite jacket will do the trick. With flexible strobe lights built right into the fabric, the jacket will act as a beacon, leaving no doubt as to where you are. The two light tubes use electroluminescent lamps that are 24 microns thin, adding virtually no weight to the fabric — apart from the pair of AAA batteries you need to run them. And if, while you're riding with your blinking CycLite jacket, you want to imagine that you're Tron racing on his light cycle, that's your business.
— Peter Pachal

Strobe-Light Safety Gear, via Oh Gizmo!