I found this off the Martha Stewart website, where the domestic diva suggested to pin this simple reminder on the mattress for when you need to flip it.

Some homeowners still do have mattresses that needs to be regularly turned over, to be sure that its comfortability and fluffiness remains in best conditions.
According to the tip from Martha Stewart, mattresses like this needs to be regularly turned over at least four times in a year, or roughly every time the season changes…which is but a sound advise as some do change the theme of their bedroom (that includes the bedding) to go with the season.
So, keep this in mind and pin a simple reminder to the side of your mattress, which you will see as you regularly change sheets (recommended at least every two weeks).











