Featherlite Ultima Pillow' the Firm & Hard Pillow provides you the ideal support for your neck and spine assuring a sound and releaxed sleep. it will not change the shape or degree in any way after continous use unlike cotton or foam filling. it fill gap between the head and the mattress providing an ideal horizontal alignment throughout the neck and spine. This Pillow Fabric has been treated with "HYDRO-COOL". High Moisture Absorbent. This pillow absorbs 30% more moisture.