Meet the ultimate comfort staple while pregnant: compression leggings! The thicker, more opaque leggings are perfect for layering with your favorite maternity tunic or dress. The compression promotes better blood flow, otherwise known as circulation and delivers a controlled amount of squeeze that"s greatest at your ankle and gradually gets lighter up the leg. True gradient compression increases circulation, prevents swelling and energizes tired legs and feet. The support top gives belly support without being constrictive.