When looking for the best full mattress, here are a few things to keep in mind. 

Firmness

The firmness of a mattress is dependent on your body type. If you are petite or an average person, your body will exert less pressure on a mattress, making it feel firmer. If you are a heavier sleeper, a mattress will feel softer. An average sleeper will find a medium firmness to be comfortable.

Support

Especially if you deal with back pain, you want a supportive mattress. A memory foam mattress is generally less supportive than a hybrid mattress that has both foam and coils. Petite and most average-size sleepers will still find memory foam mattresses supportive. If you are a heavier sleeper, opt for a hybrid or an innerspring mattress.

Edge support

The edges around your mattress should also be supportive. That way, you won’t roll off your bed in the middle of the night. You can test edge support by sitting on the edge. If you feel like you're going to slip off, you might want a bed with better edge support.

All of the beds above have been tested by our CNET Sleep editors, but we've also reviewed over 200 other beds. With that being the case, it can be difficult to narrow down the top favorites. The beds below are other mattresses we've tested that are also worth considering in your search for a new mattress.

Puffy Lux mattress: Side sleepers would also really enjoy the thick and luxurious Puffy Lux mattress. It's just as comfortable as it looks and its cloud logo is a good indication of what you're getting yourself into. It's soft and pressure-relieving as it gently wraps around the curves of your body. The main comfort foam is memory foam, but it's more light and airy than it is dense. I'd rate this mattress around a 4 out of 10 on the firmness scale or a medium-soft, so it's mostly for people who favor their side.

Tuft & Needle mattress: The Tuft and Needle bed is a simple, two-layer foam mattress without any special bells and whistles. I think it's a great mattress for kids, teenagers, your kid going off to college or a money-saving individual. It's pretty wallet-friendly, and it's arguably just as popular as the Casper mattress. It has a similar neutral-foam feel that most people find comfortable.

Allswell mattress: Looking for the best value? The Allswell mattress is the bed-in-a-box model from Walmart, and in true Walmart fashion, it's extremely wallet-friendly. It'll cost less than most regular foam mattresses, which is rare since hybrid beds are known to be more expensive. It's a little on the firmer side, around a 6 out of 10 on the firmness scale or a medium-firm.

Our CNET Sleep editors have spent countless hours testing each mattress on our many best lists. When we test mattresses, we have an established process that assesses key factors like firmness, feel, construction, performance, price, cooling properties and warranty information. We test how strong the edge of the bed is by sitting and lying on the edge. We test motion transfer by rolling across the mattress with a glass of water by the edge. We do this for all beds we test.

CNET editors pick the products and services we write about based on editorial merit. When you buy through our links, we may get a commission.

Find out more on how we test mattresses.