No, it is not but it is what most CBers are happy with and its quite cheap.
If you want to spent €120 and haul an almost 2m long antenna around, you also could use a Diamond RHM-8B, which is a telescopic amateur radio antenna. Tunable from 7 to 50MHz. Lenght is 177cm, retracted lenght is ~40cm. You will need an antenna tuner to get it tuned right. But be aware, the antenna rod is not flexible and if it gets catched in a tree it might break. Also an antenna rod this long will put a lot of mechanical force to the BNC connector of the radio when you move. This might induce damage to the housing and or pcb. However, performance will be better due to the lenght of the radiating element.