Li Ning's tight cropped trousers are not suitable for long-distance running. Li Ning's tight cropped trousers are designed for playing basketball and all kinds of indoor training. They are not suitable for running, because they are too long and easy to rub the thighs. Therefore, Li Ning's tight cropped trousers are not suitable for long-distance running. Pants are half of pants, so they can also be called half pants. The length of trousers is 40 inches (40 inches is about101.1cm) * 0.5 = 20 inches, which is generally smaller than the knees.