The WinkBeds Plus is the overall winner, with the Saatva HD a close alternative
Side sleepers require a mattress that provides sufficient pressure relief and contouring to prevent discomfort and pain. This is why we compared king-size mattresses based on specs, certifications, and aggregated owner reviews to determine the best options for side sleepers.
Our research focused on key factors such as materials, firmness levels, and motion transfer, to ensure that the selected mattresses cater to the unique needs of side sleepers. We also considered certifications like CertiPUR-US and OEKO-TEX to guarantee the use of safe and environmentally friendly materials.

The WinkBeds Plus features a unique coil system that provides excellent support and pressure relief. It is made with eco-friendly materials and has a breathable design. The mattress also comes with a 101-night sleep trial and a lifetime warranty.
We do not take payment for placement and we do not physically test products. Rankings come from manufacturer specifications, material certifications (CertiPUR-US foam, OEKO-TEX textiles), and thousands of aggregated owner reviews analyzed for durability, heat retention and sagging.

Side sleepers who prefer a balance of comfort and support · Type: Hybrid | Firmness: Medium-firm | Trial: 101 nights
The WinkBeds Plus features a unique coil system that provides excellent support and pressure relief. It is made with eco-friendly materials and has a breathable design. The mattress also comes with a 101-night sleep trial and a lifetime warranty.
What owners report: Owners report that the WinkBeds Plus has greatly improved their sleep quality, citing its ability to alleviate back and joint pain. Many owners also appreciate the mattress's edge support and motion isolation.

Side sleepers on a budget who still want a high-quality mattress · Type: Hybrid | Firmness: Medium-firm | Trial: 120 nights
The Saatva HD is a budget-friendly option that still offers excellent support and pressure relief. It features a unique coil system and is made with eco-friendly materials. The mattress also comes with a 120-night sleep trial and a 20-year warranty.
What owners report: Owners report that the Saatva HD is a great value for the price, citing its comfort and support. Some owners have noted that the mattress can be too firm, but this can be remedied with the addition of a topper.

Side sleepers who prefer a soft, pressure-relieving mattress · Type: Memory Foam | Firmness: Soft | Trial: 365 nights
The Nectar Memory Foam mattress features a unique memory foam design that provides excellent pressure relief and contouring. It is made with eco-friendly materials and has a breathable design. The mattress also comes with a 365-night sleep trial and a lifetime warranty.
What owners report: Owners report that the Nectar Memory Foam has greatly improved their sleep quality, citing its ability to alleviate back and joint pain. Some owners have noted that the mattress can be too soft, but this can be remedied with the addition of a supportive foundation.
Side sleepers who tend to sleep hot · Type: Natural Latex | Firmness: Medium-firm | Trial: 100 nights
The PlushBeds Botanical Bliss features a unique natural latex design that provides excellent breathability and cooling. It is made with eco-friendly materials and has a supportive, pressure-relieving design. The mattress also comes with a 100-night sleep trial and a 25-year warranty.
What owners report: Owners report that the PlushBeds Botanical Bliss has greatly improved their sleep quality, citing its ability to regulate body temperature. Some owners have noted that the mattress can be too firm, but this can be remedied with the addition of a topper.

Side sleepers on a tight budget who still want a high-quality mattress · Type: Natural Latex | Firmness: Medium-firm | Trial: 120 nights
The Zenhaven Latex Mattress features a unique natural latex design that provides excellent support and pressure relief. It is made with eco-friendly materials and has a breathable design. The mattress also comes with a 120-night sleep trial and a 20-year warranty.
What owners report: Owners report that the Zenhaven Latex Mattress is a great value for the price, citing its comfort and support. Some owners have noted that the mattress can be too firm, but this can be remedied with the addition of a topper.

Side sleepers who prefer a firm, supportive mattress · Type: Hybrid | Firmness: Firm | Trial: 100 nights
The Casper Wave Hybrid features a unique hybrid design that provides excellent support and pressure relief. It is made with eco-friendly materials and has a breathable design. The mattress also comes with a 100-night sleep trial and a 10-year warranty.
What owners report: Owners report that the Casper Wave Hybrid has greatly improved their sleep quality, citing its ability to alleviate back and joint pain. Some owners have noted that the mattress can be too firm, but this can be remedied with the addition of a topper.

Side sleepers who prefer a hybrid mattress with a balance of comfort and support · Type: Hybrid | Firmness: Medium-firm | Trial: 100 nights
The Leesa Hybrid features a unique hybrid design that provides excellent support and pressure relief. It is made with eco-friendly materials and has a breathable design. The mattress also comes with a 100-night sleep trial and a 10-year warranty.
What owners report: Owners report that the Leesa Hybrid has greatly improved their sleep quality, citing its ability to alleviate back and joint pain. Some owners have noted that the mattress can be too firm, but this can be remedied with the addition of a topper.
Side sleepers typically require a mattress with a soft to medium firmness rating, as this provides the necessary pressure relief and contouring to prevent discomfort and pain.
When looking for a king-size mattress for side sleeping, consider features such as pressure relief, motion transfer, and edge support. Additionally, look for mattresses made with eco-friendly materials and certifications like CertiPUR-US and OEKO-TEX.
The break-in period for a new mattress can vary depending on the type of mattress and the individual's preferences. On average, it can take anywhere from a few days to a few weeks for a mattress to fully break in and provide optimal comfort and support.
Most mattress companies offer a sleep trial period, which allows customers to return or exchange their mattress if they are not satisfied with it. Be sure to review the company's return policy before making a purchase.
Hybrid mattresses combine different materials, such as foam and innerspring coils, to provide a balanced level of comfort and support. Memory foam mattresses, on the other hand, are made from a single type of foam that conforms to the body's shape and provides pressure relief.
The WinkBeds Plus is the overall winner, offering a perfect balance of comfort and support for side sleepers. For those on a budget, the Saatva HD is a great alternative, providing excellent value for the price. For side sleepers who tend to sleep hot, the PlushBeds Botanical Bliss is a great option, featuring a unique natural latex design that provides excellent breathability and cooling.