The Pillowtop pads by Royal-Pedic provide extra cushioning and plushness to your mattress, giving you luxurious comfort and relaxation and providing relief to hips and shoulders. The pad goes directly onto the mattress and is held in place by your mattress pad and fitted sheet. Available in three levels of thickness (3″, 4″, 5″) for your preference on plushness. All three are constructed with French wool, hypoallergenic Comfort Fil 7, and a layer of latex covered in Belgian cotton. We recommend adding these to your All Cotton Mattress by Royal-Pedic.