The Classic Brands CPAP Memory Foam Contour Pillow for sleep apnea responds to temperature and pressure to mold to your shape by creating the perfect support for your head, neck and shoulders for a better nights sleep. Designed for use with CPAP, BiPAP and APAP Machines, the mask rests comfortably and reduces interference while you sleep. The built-in tether reduces hose drop. This pillow works with any sleeping position - Side, Back or Stomach. The soft velour knit fibers in the cover are designed to work with the memory foam material to optimize its contouring properties. In addition, plush velour knit cover has a zippered closure that is removable and washable.