Tail Light Brake Sense USB Mountain Bike Elastic cord design on the

Elastic cord design on the bottom for take some long items such as bike pump

Not so soft that they feel squishy

Easy to Install: L for left pedal

double flash（17-20h）

Venting hole on the palm is of breathable function to prevent sweating

Tail Light Brake Sense USB Mountain Bike Elastic cord design on theVERSATILE LIGHT MODES: The tail light has five light modes, slow flash, fast flash, breathing flash, flowing flash, long bright. Click to switch the light, double click to switch the mode INTELLIGENT SENSING: Intelligent mode mainly reflects that the tail light automatically senses the brake, and the long light is on for two seconds. During the day, tail light will automatically turn off the light after the bike has been stationary for two minutes,