I am having trouble using the Natural Curve Nursing Pillow in my armed rocking chair, was this intentional?

Due to the firm supportive nature of our pillow, and our goal of providing moms with comfortable breastfeeding support, the Natural Curve Nursing Pillow does not fit well in armed rocking chairs. We wanted to make sure there was enough surface area to fully support baby, and that the opening of our pillow was wide enough to accommodate moms of varied sizes.