The Coonp Cooling Mattress Topper, which is an Amazon best-seller, is on sale for up to 38 percent off, depending on the size you pick. The best deal is on the king option, but every size is included, from twin to California king. When you add a coupon to the existing sale price, the mattress topper is just $76.

To avoid making your topper dirty, make sure place you store it is clean and dry. If the room or closet is damp, this may lead to mold or mildew forming on the mattress topper. Likewise, make sure the storage place is temperature controlled, as a room that's too hot or in direct sunlight may damage the foam.

"This is the best thing I’ve ever bought. It Is so comfortable, I now sleep so much better and I’ve had no back pain either. Well worth every Penny."

Foam: By far the most popular fill for mattress toppers, foam is a great option if you’re looking for extra plushness and a bit of support. Soft and comfortable, foam toppers relieve pressure and come in a range of thicknesses. They can get hot, though, so if you’re a hot sleeper, you should look for gel-infused foam.