CUBE PILLOW

Pillows; bed pillows; head supporting pillows; pillows having a rectilinear, but not cubic, shape; pillows having a square shape along two dimensions, but not cubic shape along three dimensions; pillows having a consistent thickness across their width and length; foam pillow inserts; unitary foam pillow inserts; foam core pillows; rectilinear, but not cubic, foam core pillow inserts; rectilinear foam core pillow inserts