Upper pipe package, alias: beam upper package, car beam package. The main competitor to keep up with the pipe package is the tail package behind the seat, both of which have their own advantages and disadvantages. It's convenient and fast to take things from the tube bag, and it has always been within the scope of its own vision, which is superior in terms of safety and convenience. The side of the rear tail bag is better in capacity, which can carry more things, larger size, and even air pump. In terms of wind resistance, the upper tube package has a certain wind resistance. Of course, the streamlined design, such as the streamlined shape of hazelong's spacecraft, greatly reduces the wind resistance. The wind resistance of the tail is very small. After all, the body of the rider has blocked the incoming wind. In terms of the impact on the stability of the car body, the upper pipe bag is dominant, and the impact is almost negligible, while the tail bag will slightly shake the bike.
