I have several small pillows, only about 5 by 6 inches, and quite flat. Each has a small opening in the back to put in the herbs of your choice. Then you put the little pillow, underneath your regular pillow, and it helps to have a good, nights sleep. Of course, you need to have an herb which is relaxing for you. I love Rose and Gardenia, but for me they are more get up and go scents. I always put Lavender in my little pillows. Putting Lavender essential oil in my bath is also a great help to relaxing before bed.