FOR PURCHASE ONLY: These pantyhose are designed to deliver true gradient compression to help improve circulation, prevent swelling, and energize tired legs and feet. True gradient compression delivers a controlled amount of pressure greatest at the ankle and gradually decreases towards the top of the stocking to promote better blood flow. The unique top will fit during all stages of pregnancy. The built-in tummy support panel provides a sense of stability for active mommas and can be worn folded under belly or unfolded to cover belly. The smooth seams will not dig into your tummy or show under clothes.