The Best Soft Mattresses

By Beth Krietsch

If you sleep on your side—either in the fetal position or with a straight back and legs, you’re not alone. The jury is out on exact percentage, but this is the preferred sleep position for most people. For a side sleeper to achieve the best sleep, they’ll want to choose a soft mattress that supports the spine’s natural curve without putting pressure on the hips and shoulders.

Most side sleepers will find the most comfort on a mattress that ranks somewhere between a 3 and 5 on a 10-point scale (with 1 being the softest and 10 the hardest). Mattresses in this range will offer the most give and almost feel as though they hug the body, and tend to offer the best chance for a side sleeper to achieve a restful sleep and pain-free mornings.

The 10-point firmness scale is an objective way of identifying how firm or soft a mattress is, though most of it comes down to feel. The firmness scale is not an exact science, but rather a good relative scale for comparing mattress feel.

Our recommendations for best soft mattresses

Read along to find out some of our favorite soft mattresses, each ranking between 3 and 5 on a 10-point firmness scale. For further ideas, check out our mattress reviews page.

Amerisleep: AS3 and AS4

Amerisleep’s AS3 and AS4 are its softest mattress options. The AS4 offers the most pressure relief and is recommended for side sleepers, whereas the AS3 is a good choice for combination sleepers who alternate positions in the night. Shipping is free and you can take advantage of the company’s 100-day trial period to make sure the mattress is a good fit.

Amerisleep gets a perfect rating (that’s five stars!) on the House Method scale. Their commitment to environmental responsibility and attention to detail are just a few of the reasons why we think so highly of this brand.

MORE: House Method’s Amerisleep Review


Layla makes a copper-infused, double-sided mattress that you can flip depending on whether you’re looking for something firm or soft. The soft side of the mattress falls around a 4/10 in firmness and is highly recommended for side-sleepers given that the copper cells are designed to allow your body to sink in a bit, alleviating pressure point pain.

Layla gets a perfect score in House Method’s mattress reviews. Just one reason we like the Layla mattress so much is the lifetime warranty it comes with—that tells you Layla stands by the quality of this mattress.

MORE: House Method’s Layla Review

Brentwood Home: Cedar

Made in Los Angeles from non-toxic, natural, and organic materials, Brentwood Home mattresses are a good fit for the environmentally conscious. Among Brentwood Home’s three mattress offerings, try the Cedar for a soft mattress that offers medium support for the shoulders, legs, and back, with a slightly bouncy feel. The company offers free shipping and a 120-day trial period.

Brentwood Home gets a perfect score in House Method’s mattress reviews. Their commitment to eco-friendliness and 25-year warranty are just two reasons why.

MORE: House Method’s Brentwood Home Review


Zinus offers many of its memory foam and innerspring mattresses in varying degrees of firmness. Choose one of the “plush” options for a softer mattress that combines support with comfort. As an added bonus, these are some of the most affordable mattresses out there. Shipping is free and each mattress comes with a 100-day trial period.

Zinus also gets a perfect score in our mattress reviews.

MORE: House Method’s Zinus Review

Nest: Alexander Series and Q3 Latex

Nest makes six different eco-friendly mattresses, and two of them are available in a soft option: the Alexander Signature Series and the Q3 Latex Mattress, which comes with a three-inch soft top. Free returns and a 100-day trial period let you make sure the mattress is a good fit for your needs.

MORE: House Method’s Nest Mattress Review

Brooklyn Bedding

Brooklyn Bedding makes mattresses in three levels of firmness, with the softest option ranking 3/10 on the firmness scale. This is a great choice for both back and side sleepers, though not recommended for stomach sleepers (as is the case with most soft mattresses). Shipping is free within the United States, except for Hawaii and Alaska, and all mattresses are subject to a 120-day risk-free return policy.

MORE: House Method’s Brooklyn Bedding Review

Cocoon by Sealy

Cocoon by Sealy makes two mattresses, each available in soft or firm, and with a memory foam comfort layer designed to ease back, neck, and shoulder pressure. The soft is a good option for side sleepers. Sealy offers quick two-day shipping and a 100-day trial period. If you’re not satisfied, you can try a different level of support, and then make a return if that isn’t a good fit either.

MORE: House Method’s Cocoon by Sealy Review


Saatva makes mattresses in three different levels of firmness. Side sleepers should choose the “plush soft” option for a mattress that comes in at a 3/10 on the firmness scale and feels like it hugs your body. Mattresses come with a 120-day return policy, but the company asks that you give your mattress at least 30 days before making and returns.

MORE: House Method’s Saatva Review

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