C-PAP Sleep Apnea Pillow specially designed to help keep a CPAP or BI-PAP MASK in place. Helps prevent pressure points that can cause mask to dislodge and release. Unique design accommodates sleeping on either side or your stomach. Buy pillow and case together and save. Polyester fill; machine-washable polyester cotton case. Made in USA. 23″Lx18″W.