The Araluna pregnancy pillow adjusts to you and your sleep preferences. You can add and remove fill to adjust it to the firmness and height of your liking. We've also added a removable detachment for ultimate control. In addition, we used a premium silver infused bamboo cover that is naturally cooling, antimicrobial, and softer than silk - it's really the best pillow for any expecting mother (or anyone who wants some extra support!)