Many bike-involving accidents occur because cyclists switch lane or take a turn outside the rear drivers' expectation, especially on dark roads. These Signal Gloves are built with a pair of giant flashing arrows on the back of each hand to signal turning. Nine ultra-bright LEDs will work together to flash up the turning arrow. And the gloves can also be used to notify front approaching vehicles when you are turning at an intersection. When you hand flat grip the bike the glove will not light ,when turning, the back of you hand tilt,the sensing gravity light to remind the surrounding bike that you are making a turn, to prevent accidents.Skaters and runners may also find the gloves useful in low light conditions.