Before purchasing sheets, make sure you know the depth of your mattress. The depth of your mattress is the thickness and size of your mattress from top to bottom. This is very important to know when shopping for new sheets as it may alter the fit of standard sheets. Mattress depth can be categorized in the following ways:
Keep in mind that you may want to invest in different sheets for different purposes — for example if you live somewhere that can be bothverycold andveryhot, you might want separate summer and winter sheets.