Works fine. Leaves a huge gap at the bottom of your coat, though. Wish it covered up that gap. I can button my coat at the bottom to cover it... but it requires some bending over, which is not ideal when you're pregnant. It also adds yet another zipper, which means the coat gets really wide at the front. I would have preferred a product that was just long enough with one full piece and one additional zipper.
Still, no issues with how it works and it has kept my coat wearable. Seems well made, strong seams and good quality zipper.