Build a Custom Donut Neck Pillow that helps you sleep better at night. The donut hole in the pillow helps you sleep with head phones, reduce stress on your ears, a place for your pony tail, makes the Cpap Mask more comfortable, and more while giving you neck support. With the donut hole in the middle, this pillow flexes to curve around your shoulder and helps your head stay align with your body to reduce stress off your neck. If you sleep on your back, this pillow can cradle around your neck to pull your head back for better air flow.