Read on for everything you need to know when shopping for a new mattress.
Our Editor’s Best Semi Firm Mattress Reviews
Signature Design by Ashley Chime 12″ Medium Firm Memory Foam Mattress, CertiPUR-US Certified, Queen

Key Features:
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The Memory Foam Mattress is a semi-firm mattress that is designed to contour to your body and provide support, pressure relief, and comfort. Please note that it may take up to 72 hours for the mattress to fully expand, and that expansion time may vary depending on the temperature of the room.
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This mattress is designed with layers of memory foam for support and pressure relief. The support foam core reduces motion transfer for peaceful, undisturbed sleep.
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This mattress has thick layers of memory foam that contour to your body and deliver amazing support, pressure relief, and comfort for all types of sleepers.
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This mattress is 59 inches wide, 79 inches long, and 12 inches thick. It is a semi-firm mattress that is compatible with most full bed frames. The bed foundation, box spring, and frame are available for purchase separately.
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The mattress is semi-firm and comes in a box. You just have to unbox it, cut the protective wrap, unroll it, and watch it expand.
Swiss Ortho Sleep, 12″ Inch Certified Independently & Individually Wrapped Pocketed Encased Coil Pocket Spring Contour Mattress – Queen

Key Features:
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This semi firm mattress is designed to provide comfort and support for your body. It is made of memory foam, which will adjust to your body temperature and expand in a warmer room. In cold temperature, the mattress may take a bit longer to return to full sized from its compressed state.
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The Swiss Ortho Sleep Mattress is a semi firm mattress that is made of high quality materials. It is 12 inches thick and has pocketed coils that contour to your body. It is also temperature sensitive and will last for many years.
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The Seperate Pocketed Coil mattress is a semi firm mattress that contours to each person’s body. It is individually wrapped to provide support and doesn’t transfer motion.
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This mattress is designed for deep, comforting pressure relief sleep. The pocket coils allow blood and oxygen to circulate more efficiently throughout the body. The bamboo cover allows breathability throughout the mattress.
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The semi firm mattress is 12 inches high, 60 inches wide, and 80 inches long. It is made of firm foam that provides support for the body. It is also covered in a soft, comfortable fabric that helps to keep the body warm.
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The Swiss Ortho Sleep Always Comes with a 10 Year Manufacturer Warranty is a semi firm mattress that is covered by a 10 year warranty.
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The semi firm mattress is a compressed mattress that is easy to set up and convenient to use. It is perfect for people who want a firm mattress but don’t want to spend a lot of money on a new one.
Zinus 12 Inch Green Tea Memory Foam Mattress / CertiPUR-US Certified / Bed-in-a-Box / Pressure Relieving, Queen

Key Features:
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A semi firm mattress is a mattress that is not too soft and not too hard. It is somewhere in between the two, making it a good option for people who want a little bit of both. This particular mattress is made of memory foam, which means that it will take a little bit of time to expand to its full size.
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This mattress is a semi-firm mattress that is infused with green tea and ActivCharcoal. It is made of pressure-relieving memory foam that cradles your shape.
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The mattress has three different types of foam, which are designed to provide pressure relief, comfort, and support. The foams are also arranged in a way that is ideal for side sleepers and people of petite to average weight.
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If you are looking for a mattress with high quality foam that is certified for durability and performance, then this is the mattress for you. The CertiPUR US certification guarantees that the foam in this mattress meets rigorous standards for safety and performance, so you can rest assured that you are getting a great product.
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This is a semi firm mattress that will be shipped in a box. It will take about 72 hours for the mattress to expand to its original shape.
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The mattress is semi-firm and includes a 10 year limited warranty. It can support a maximum weight of 250 lbs for twin size and 500 lbs for all other sizes.
LINENSPA 8 Inch Memory Foam and Innerspring Hybrid Mattress – Twin XL Mattress – Bed in a Box – Medium Firm Mattress

Key Features:
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The semi firm mattress is a hybrid mattress that combines the contouring comfort of memory foam with the bouncy feel of steel springs. It is designed to be responsive to your body, and it will take 24-72 hours for the mattress to regain its full shape.
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The semi firm mattress is a great value for the money. It is made with durable materials and will provide you with many years of good sleep.
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The mattress is medium-firm, which means it is not too soft or too hard. It is perfect for bunk beds, kid’s rooms, RVs, guest rooms, and more.
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This mattress is a semi-firm mattress that is available in 8-inch, 10-inch, and 12-inch options. It is designed for sleepers of all ages and offers more comfort than a firm mattress.
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The semi firm mattress for a shopper is an innerspring and memory foam mattress that ships directly to your door. It is a complete package that includes a bed in box.
Milliard Memory Foam Mattress 10 inch Firm, Bed-in-a-Box | Pressure Relieving, Classic (Queen)

Key Features:
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The mattress is made of 1 inch of memory foam over a 9 inch high density foam base. It is designed to be firm and supportive.
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The Milliard foam mattress is a semi firm mattress that is designed to be comfortable and provide a balanced level of support. The mattress is made from a foam material that is designed to be consistent throughout, so that it does not bottom out.
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A semi firm mattress is a mattress that is not too soft and not too hard, making it perfect for people who want a little bit of both. This mattress also has a removable and machine washable cover, making it easy to care for.
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The Milliard semi firm mattress is a luxurious and durable mattress made of certified foam that will retain its shape. It is always consistent throughout the mattress, providing a comfortable and supportive sleeping surface.
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The mattress is 10 inches thick and is semi-firm. It ships compressed and rolled, but can be slept on immediately. Allow up to 72 hours for the mattress to fully expand.
Novilla Queen Size Mattress, 12 inch Gel Memory Foam Mattress for a Cool Sleep & Pressure Relief, Medium Firm Feel with Motion Isolating, Bliss

Key Features:
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This mattress is semi-firm, meaning that it is not as soft as a traditional mattress, but not as hard as a memory foam mattress. It is made of memory foam, which means that it will take a bit longer to return to its full size in cold temperatures.
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This mattress is semi-firm and includes four different foam layers. The gel memory foam is combined with comfort foam to distribute pressure and mold to your body. The two layers of high density foam improve durability and give your body support for proper spinal alignment. This mattress also resists sagging and prevents roll-off.
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The mattress is made of CertiPUR-US Certified foam, which is safe and comfortable. The bed mattress cover is made of skin-friendly rayon fabric, which is soft to touch. The mattress gives you a healthier and cloud-like experience.
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This mattress is a queen size, and it comes in a box. It is easy to set up and it fits all kinds of queen bed frames, even on the floor. The mattress is semi firm, and it is recommended that you let it air out for 72 hours before using it.
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The mattress is a queen-sized memory foam mattress with a 10-year protection plan. It comes with a 100-day free trial period during which the customer can return the mattress if they are not satisfied. The company also provides customer care to address any problems the customer may have.
Cat Footwear Men’s Second Shift Steel Toe Work Boot Construction, Black, 9 Wide

Key Features:
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This mattress has a Climasphere cushioned insole that is breathable and should keep your feet comfortable during the work day.
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The Goodyear Welt Construction semi firm mattress is a durable mattress that is flexible and provides maximum comfort.
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The mattress is made of high quality oiled full grain leather or nubuck, which makes it durable and long lasting. It is also designed to protect the shopper from any potential harm.
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A semi firm mattress is a mattress that is not too hard or too soft. It is somewhere in between the two. This mattress is good for people who want a little more support than a soft mattress, but do not want the firmness of a hard mattress. This mattress is also good for people who have back pain or other pain that is aggravated by a hard mattress.
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The semi firm mattress is designed to protect the wearer from electrical hazards. It is made from a material that is resistant to open circuits up to 600 volts in dry conditions.
AICEHOME Queen Mattress, Hybrid Mattress High Density Foam Individually Wrapped Pocket Coils Mattresses,Motion Isolation Medium Firm Queen Size Bed Mattress

Key Features:
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This is a semi-firm mattress that is designed to provide support and comfort. It features a scientific support structure with high-quality spring to ensure your comfortable sleep. Additionally, it is designed to prevent movement transmission so you will not be disturbed when your partner moves around in the night.
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The semi firm mattress is designed with ergonomic springs that provide support for the body. The springs are spaced evenly to allow for movement without being pressed by other external forces. This results in a sweet sleep for the shopper.
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This mattress is made of breathable foam that will keep you cool while you sleep. The fiberglass-free inner knitted fabric cover also helps air circulate and dissipate heat from the surface of the mattress.
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The semi firm mattress is made of pocket springs that are isolated to prevent the springs from aging. The pocket springs make the body’s force more balanced and can relieve pressure on the body for a good night’s sleep.
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The mattress is a hybrid of memory foam and springs, semi-firm, and ships in a box. It is easy to set up, and should be left to expand for at least 72 hours for best results.
Lucid 6 Inch Twin Mattress – Firm Gel Memory Foam Mattress Twin— Bamboo Charcoal Mattress in a Box—CertiPur Certified

Key Features:
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A semi firm mattress is a mattress that is not too hard or too soft. It is somewhere in between the two, making it a perfect option for people who want a comfortable mattress that provides support. This type of mattress is also a good choice for people who have back or joint pain, as it can provide relief from pressure points.
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The Lucid mattress is a semi firm mattress that includes 1 inch of ventilated gel memory foam and 5 inches of bamboo charcoal infused support foam. This mattress is ideal for stomach and back sleepers who need a firm mattress.
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This semi firm mattress is a memory foam mattress with a 1-inch layer of responsive memory foam. It is designed to provide more comfort than a traditional innerspring mattress. It also has ventilation holes to allow for easy air transfer.
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This mattress has a layer of bamboo charcoal infused memory foam to help with freshness and hypoallergenic properties.
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The mattress is made of memory foam, which contours to the body and provides support. It is semi-firm, which means it is not as soft as a pillow-top mattress, but not as hard as a traditional firm mattress. It is also designed to fit well in an RV or bunk bed and works well with any slatted bed frame, platform bed, or adjustable base.
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The Lucid semi-firm mattress is a mattress that is shipped in a box and expands within 24-48 hours. It is designed to be a comfortable mattress for all types of sleepers.
Sleep Innovations Marley 10 Inch Cooling Gel Memory Foam Mattress with Airflow Channel Foam for Breathability, Full Size, Bed in a Box, Medium Firm Support

Key Features:
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This is a semi firm mattress that may take 24-72 hours to expand to its full size. The expansion time may vary depending on the temperature of the room.
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This mattress is a full size, 10 inch cooling gel memory foam mattress that is perfect for hot sleepers. It is a medium firm mattress that features a triple layer design with a soft knit cover, responsive foam and a durable base layer for pressure relieving support in any sleep position.
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The Cooling Comfort mattress is a full memory foam mattress that features cooling gel foam and an airflow channel for enhanced breathability. This mattress is designed to keep you cool all night long, so you can sleep comfortably through the night.
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The mattress is designed to provide support for all types of sleepers, with features like motion isolation, edge support, and breathable comfort. The mattress is also eco-friendly.
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The Marley mattress is a semi firm mattress that is made in the USA and Mexico. It is hypoallergenic and CertiPUR-US certified, meaning that it is made with high quality materials that are designed for high quality sleep.
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The semi firm mattress is a memory foam bed that is designed to provide sleep restoration. It comes with a 10 year warranty.
Semi Firm Mattress FAQs
1. What are the benefits of a semi firm mattress?
A semi firm mattress has many benefits, including:1. It provides support for your back and spine.2. It helps to relieve pressure points and improve circulation.3. It is ideal for side sleepers as it provides support without being too firm.4. It is also a good option for people who suffer from back pain as it offers some relief.
2. What are the disadvantages of a semi firm mattress?
The disadvantages of a semi firm mattress are that they can be less comfortable than a softer mattress and may not provide the same level of support for people with back pain.
3. How long does a semi firm mattress last?
A semi firm mattress will last about 7-10 years.
4. How much does a semi firm mattress cost?
A semi firm mattress can cost anywhere from $500 to $1,000.
5. What is the best semi firm mattress?
There is no definitive answer to this question as everyone has different preferences. Some people may prefer a softer mattress, while others may prefer a firmer mattress. It is important to try out different mattresses to see which one is most comfortable for you.
Conclusion
There are many great semi firm mattress on the market. Our list of the best semi firm mattress will help you save time researching and choosing the best one for you.