Seat bag is a very important role for a bicycle, which not only determines whether the rider can exert the performance of the bicycle, but also determines whether the rider is comfortable when riding. As all riders know, when riding, our legs, arms and hips will bear the weight of our bodies, accounting for about one-third of our bodies. Of course, the specific weight of our bodies depends on the actual situation. One-third is just a reference value, and the proportion of different models is different. When we choose a seat, we don't choose it casually. It depends on the weight of our body, the size of our hips, the plate bones and other factors, and the weight that the seat can bear. However, many riders ignore the importance of the seat bag and choose one casually. In fact, the seat bag is very important. Seat bags directly affect whether our riding experience is comfortable or not. Even if the best bike doesn't have a seat bag that suits you, it can't give full play to the performance of your bike. Just like a best car, you can't give full play to the performance of driving without a driver's license. Therefore, as a cyclist, you should pay attention to the choice of seat bags. For example, if a top-class road bike is installed with a mountain bike seat bag, it will not only affect the performance of the bike, but also can't give full play to the performance of the bike. In serious cases, it will also affect the health of the cyclist. Riders who have ridden a long distance all know what it's like to have a sore butt, and whether the seat bag is suitable for them is also a reason. There are also changes in the focus of the hip, and so on. In fact, there are several famous brands of bicycles on the market, such as Giant, Merida, Lightning, Trick, etc. Xiaobian personally thinks that the design of Lightning's seat bag is more humanized and comfortable. Compared with other brands, it may be different from person to person. There is no best seat bag, only the one that suits you is the best.