Absolutely! The Ab System is suitable for use whether you have a vaginal birth or a cesarean birth and in fact, many professionals believe it is an absolute must after a cesarean birth.
The beauty of the Ab System is that you have versatility depending on the sensitivity of your incision. Some start with just the tank and then add the wrap a few days later. Some start with both right away while others wear nothing for a few days and then add the tank and wrap. We even had a midwife choose to wear it backwards with the lumbo-sacral pad over her incision because she liked more pressure on it.
We have had feedback that the design of our wrap was much better than others because of the elastic arms and that it is put on from the bottom up, not as a large panel over another panel. This helps lift the belly away from the incision.
As for the exercises, we recommend starting with the core breath, as you would after a vaginal birth but hold off on adding in the voluntary pelvic floor contractions for a week or so and just focus on the breath and visualizing the contract and relax of your pelvic floor.