When you buy this pair of dep sleep pillows youll not only help prevent neck ache and back pain youll also save 5 each has a stable base layer of high density foam that ensures the head is supported at the ideal angle for comfortable sleep the thermo sensitive memory foam surface and over 180 gentle pressure nodes relieve stress and pressure by constantly conforming to your shapethermo sensitive memory foam surface180 gentle pressure nodes relieve stress and pressurecomes with 100 cotton