The weight divisions for female boxers are generally the same as those for male boxers. But the actual weight limits within each division may be different. For example, the flyweight division for men is up to 112 lbs (51 kg), while the flyweight division for women is up to 106 lbs (48 kg). Similarly, the bantamweight division for men is up to 118 lbs (53.5 kg), while the bantamweight division for women is up to 119 lbs (54 kg). The other weight classes for men and women are mostly similar, but with slight changes in the weight limits.
Because men and women have different physiological characteristics, and it is generally considered to be more challenging for women to make the weight limits in the same divisions as men. In addition, there are generally fewer female boxers competing at the elite level, which means that the pool of competitors in each weight division is smaller.
So, in summary, while the weight divisions are similar the weight limits are different to make the competition fair and accommodate the biological differences.