If you’re wondering “What the heck is a top sheet anyway?”, here’s what you need to know: a top sheet is a thin fabric that provides the final layer on your bed. Unlike the flat sheet that protects the mattress, a top sheet goes over the comforter, blankets, quilts, etc., and protects from damage or dust. Some may argue that it adds the final ‘flare’ to the bed-making. But, is a top sheet really that necessary? To get to the bottom of the dilemma, we’ve consulted a few experts to weigh in and share their opinions. Here are the reasons they are never giving up their top sheets. “For chillier seasons, a top sheet combined with a blanket under a duvet offers more options for layering, kicking-off, or draping yourself in, to achieve that perfect sleeping temperature,” says Anki Spets, a New York-based small business owner and founder of AREA Home. Temperature regulation when sleeping is a big one. Having that additional (but thin!) layer can help to keep from sweating or to provide a barrier between your body and other bedding layers. In fact, one of the biggest reasons experts prefer top sheets is the practicality mixed with the refined feel. And let’s face it, our rooms—and how they look—do say a lot about us. “Never give up on your top sheet unless you wash and change your duvet cover as often as you change your pillowcase and fitted sheet,” shares Torun Hannam, Founder of The Bamboo Shop. “If your favourite duvet cover is more of the decorative variety and too delicate for the washing machine, you’ll definitely need a top sheet.” Rather than attempting to wash a delicate (and bulky) item, you can simply take the top sheet and run it through the washer whenever you need. That means less hassle, more protection, and you can keep the quality of your handmade quilt, duvet, or special blanket intact. “If your duvet cover is made from anything but 100% natural fabric, you’ll want to add an all-natural top sheet layer closest to your body,” says Hannam. Something that is natural, breathable, and moisture-wicking, like cotton or bamboo, is best, she says.