Here’s what Dynasty says about looking after their mattresses. You can remove the mattress cover, and machine wash it, except for the 15.5 inch Atlantis Breeze mattress, which Dynasty recommends only spot washing.  If you’re keen to use heat pads or blankets during those cold winter months, Dynasty recommends keeping your blanket on a low heat setting.   Tempurpedic tells customers their mattresses are “virtually maintenance-free.” Good news so far. But, if you’re a heated blanket fan, you may be disappointed because it’s not recommended that you use one with a Tempurpedic mattress. After all, the heat from the blanket or heating pad may stop your mattress from reacting to your body’s natural temperature at night and, subsequently, its ability to adjust to your body shape. If, however, this is an absolute must-have, then sure, go ahead, but for no longer than 30 minutes.  If you want to adequately protect your mattress with an extra cover, Tempurpedic recommends buying one of their own brand mattress protectors. Apparently, conventional mattress covers may stop your mattress from molding to your body. If you plan on sticking to the mattress cover provided, you can remove and wash it according to the instructions on the tag. Wash and dry at a cool temperature and don’t use any harsh chemical detergents and/or stain removers. Think of your mattress cover a bit like your favorite sweater, and you won’t go wrong.