Built in speaker allows you to listen to your favourite sounds in comfort. Excellent for sufferers of tinnitus and insomnia to help create background noise and relaxation. Removable cable allows pillow to be kept tidy and safe when not in use. Ideal for travelling as a comfortable source of entertainment. Requires music source such as IPOD, MP3 or radio, any audio device with a 3.5mm stereo plug. Not suitable to be used for children under the age of 5 years old. Outer:50% polyester, 50% cotton. Filling:Polyester. Spot clean only. White.