Bike riding is an excellent cardio exercise which is more and more popular. It is low carbon and green. What’s more, it can make your body health. But there is a problem when you are riding bicycle, it is hard to tell others your route. There is a bag named SEILBAG which can promise the safety to some degree. There are LED signal lamps on bags, it can make the signal clearly at night and can tell others be careful.
The led can tell others by pictures or words. There are two models, one is the riding model. It can tell you are turning left or right. Another is emotion model, it can show different emotions.
