These pouches are formed with the shape of a pillow with a bottom, top and back seal. They feature heat seals at the top and bottom of the pouch. There is also a centre seal at the back of the pillow that has a short flap running vertically from the top to bottom seal. Pillow pouches are widely used and are one of the most economical forms of packaging. They are available in different finishes, multiple sizes and styles. They can be made of various materials such as plastic, foil and paper and come in resealable and non-resealable varieties with the option of a hang holes for retail display.