You know your hand signals. But unless they've been through drivers ed recently, odds are the people around you don't. Zackees Turn Signal Gloves leave no doubt as to your intentions when on your bicycle, informing drivers of your intent to turn via powerful LEDs built right into the tops of both gloves. To use them, just bring the contact points on the index finger and thumb together to activate a flashing arrow light. An ambient light sensor boosts the brightness during daytime use, and thanks to an automatic on/off feature, you can get months of use before it's time to replace or recharge.