Uncover 85+ Stunning Extra Firm King Mattress Only Voted By The Construction Association

If you're looking for a king mattress that offers both extra firm support and a plush pillow top for added comfort, the Sealy Response Performance 14-Inch Cushion Firm Pillow Top Mattress is a top choice. This mattress features a combination of innerspring coils and memory foam layers to provide support and pressure relief for a restful night's sleep.

The cushion firm feel of this mattress is perfect for those who prefer a firmer level of support, while the pillow top adds a touch of softness for enhanced comfort. The mattress is also designed with Sealy's exclusive Posturepedic technology, which targets the heaviest part of your body for reinforced support and better alignment.

With its 14-inch thickness, this mattress is also a great option for larger individuals or those who need more support for their back and joints. Plus, the extra firmness can help prevent sagging and prolong the lifespan of your mattress.

For those who want the best of both worlds in terms of firmness and comfort, the Sealy Response Performance 14-Inch Cushion Firm Pillow Top Mattress is an excellent choice.

Serta is a well-known and trusted brand in the mattress industry, and their Perfect Sleeper line is designed to provide optimal support and comfort for a good night's sleep. The Extra Firm King Mattress from this collection is a standout option for those who prefer a firmer level of support.

This mattress features Serta's exclusive Custom Support Innerspring system, which is designed to respond to your body's unique shape and movements for targeted support. It also has a layer of Cool Twist gel memory foam to help regulate your body temperature and prevent overheating during the night.

The extra firmness of this mattress is ideal for those who suffer from back pain or need more support for their spine and joints. It can also be a great choice for stomach sleepers who need a firmer surface to prevent sinking in and causing strain on their back.

With its high-quality construction and advanced support technologies, the Serta Perfect Sleeper Extra Firm King Mattress is a great investment for those looking for an extra firm sleep surface.

For those who prefer a traditional innerspring mattress with a touch of extra firmness, the Beautyrest Silver Extra Firm King Mattress is a top choice. This mattress is designed with advanced pocketed coil technology to provide individualized support for each sleeper, along with a layer of comfort foam for added cushioning.

The extra firm feel of this mattress is perfect for those who need more support for their back and joints, as well as for stomach sleepers who require a firmer surface to keep their spine in alignment. The mattress also features Beautyrest's DualCool Technology, which helps regulate temperature and prevent heat buildup during the night.

With its classic innerspring design and additional support features, the Beautyrest Silver Extra Firm King Mattress is a great option for those who want a traditional mattress with extra firmness.

The Stearns & Foster Estate Rockwell Luxury Firm King Mattress is a high-end option for those looking for an extra firm sleep surface with a touch of luxury. This mattress is handcrafted with high-quality materials and features an exclusive IntelliCoil support system that adapts to your body for optimal comfort and support.

The luxury firm feel of this mattress is perfect for those who prefer a firmer level of support, as well as for back and stomach sleepers who need extra support for their spine and joints. The mattress also has a layer of PrimaCool gel memory foam for added pressure relief and temperature regulation.

With its elegant design and advanced support technologies, the Stearns & Foster Estate Rockwell Luxury Firm King Mattress is a top choice for those looking for an extra firm and luxurious sleep experience.

Tempur-Pedic is a well-known brand in the memory foam mattress industry, and their ProAdapt Firm King Mattress is a top pick for those looking for a firmer sleep surface. This mattress is designed with Tempur-Pedic's signature TEMPUR material, which conforms to your body for personalized support and pressure relief.

The firm feel of this mattress is perfect for those who need extra support for their back and joints, as well as for stomach sleepers who require a firmer surface to keep their spine in alignment. The mattress also features a SmartClimate Dual Cover System to promote cooling and prevent heat buildup during the night.

For those who prefer the contouring and pressure-relieving benefits of memory foam with a firmer feel, the Tempur-Pedic ProAdapt Firm King Mattress is a top choice.

The Beautyrest Black Calista Extra Firm King Mattress is another top-tier option for those looking for extra firm support with a touch of luxury. This mattress is part of the Beautyrest Black collection, which is known for its advanced support technologies and high-quality materials.

The extra firm feel of this mattress is perfect for those who need added support for their back and joints, as well as for stomach sleepers who require a firmer surface to prevent sinking in and causing strain on their back. The mattress also features Beautyrest's T3 Pocketed Coil Technology, which provides targeted support and comfort for a restful night's sleep.

With its premium construction and advanced support features, the Simmons Beautyrest Black Calista Extra Firm King Mattress is a top pick for those looking for a firm and luxurious sleep experience.

The Sleep Number i8 Smart Bed Extra Firm King Mattress is a unique option for those who want the ability to customize their level of firmness. This mattress is designed with Sleep Number's exclusive air chambers, which can be adjusted to your desired level of firmness using a remote control.

The extra firm option is perfect for those who need added support for their back and joints, as well as for stomach sleepers who require a firmer surface to keep their spine in alignment. The mattress also features a layer of contouring comfort foam for added pressure relief.

With its customizable firmness and advanced support technologies, the Sleep Number i8 Smart Bed Extra Firm King Mattress is a great choice for those looking for a personalized sleep experience.

The Purple Hybrid Premier Extra Firm King Mattress is a unique option for those looking for a firm sleep surface with the added benefits of Purple's innovative technology. This mattress features a combination of pocketed coils and Purple's signature Hyper-Elastic Polymer grid for targeted support and pressure relief.

The extra firm feel of this mattress is perfect for those who need added support for their back and joints, as well as for stomach sleepers who require a firmer surface to keep their spine in alignment. The mattress also has excellent motion isolation, making it a great option for couples.

With its combination of support and comfort technologies, the Purple Hybrid Premier Extra Firm King Mattress is a top pick for those looking for a unique and firm sleep experience.

The Saatva Classic Firm King Mattress is a top choice for those looking for an extra firm innerspring mattress with added support features. This mattress is designed with dual perimeter edge support and a layer of high-density foam to provide targeted support and prevent sagging.

The firm feel of this mattress is ideal for those who need extra support for their back and joints, and it can also be a great option for stomach sleepers who require a firmer surface. The mattress also features a Euro pillow top for added comfort and cushioning.

With its durable construction and advanced support technologies, the Saatva Classic Firm King Mattress is a great choice for those looking for an extra firm and supportive sleep surface.

The Avocado Green Mattress Extra Firm King Mattress is a top choice for those looking for an eco-friendly and extra firm sleep surface. This mattress is made with organic and natural materials, including latex and wool, to provide comfortable and sustainable support.

The extra firm feel of this mattress is perfect for those who need added support for their back and joints, as well as for stomach sleepers who require a firmer surface. The mattress also has excellent motion isolation and temperature regulation for a comfortable night's sleep.

For those who value sustainability and want an extra firm sleep surface, the Avocado Green Mattress Extra Firm King Mattress is an excellent option.