Best 12-Inch King-Size Mattresses

The Snuggle Home Soft Memory Foam King-Size Mattress is perfect for people who are more sensitive to allergies. This Snuggle Home mattress features a memory foam construction, accommodating every possible sleeping position. It has cooling technology, which absorbs heat more efficiently to prevent night sweats. Providing pressure point relief, it is good for stomach sleepers.

With a 12-inch thickness, this Snuggle Home mattress can sustain a lot of weight so it won't sink in easily. It has a soft comfort, which is perfect for people who naturally sleep on their sides. Available in a king-size, it offers plenty of room to spread out and relax. It features a stretch knit cover, which stretches to fit a large mattress perfectly. Designed with hypoallergenic materials, it ensures a restful night's sleep.

The Sleepy's Plush Gel Memory Foam King-Size Mattress is a great choice for anyone who gets overheated while they're sleeping. Made with cooling technology, this Sleepy's mattress ensures your body temperature stays regulated so you never get too hot at night. It minimizes motion transfer, which promotes a deeper sleep, even if your partner tosses and turns in bed. With a gel memory foam construction, it features better air circulation, which draws heat away from the sleeper.

This Sleepy's mattress is available in a king-size, giving you the space to stretch out. It has a single layer and a plush comfort level, which can get lumpy or sag over time. Featuring a 12-inch thickness, it provides a lot of support and can handle more weight than thinner mattresses. With a ventilated design, it encourages airflow and controls moisture levels. This easy-to-handle thick mattress is ideal for easy to transport.

For a better night's rest and endless comfort, opt for a Comfort Memories Plush Hybrid King-Size Mattress. Available in a king-size, this Comfort Memories mattress offers plenty of room to relax and spread out. It has a 12-inch thickness, preventing the mattress from sagging or losing its shape over time. It features antimicrobial fabric, which make it perfect for people who suffer from allergies. With a plush comfort level, this Comfort Memories mattress is perfect for people who love extra softness. With four layers, it supplies you with support, ultra comfort, resilience, and ultimate softness. This Comfort Memories mattress is designed with a hybrid construction, combining the best features of various different mattress types. It has a polyester cover, which is a strong option that will retain its shape over the years.

Looking to go the eco-friendly route? Consider the Sleep Sync Firm Memory Foam King-Size Mattress. Available in a king-size, this Sleep Sync mattress offers an ample amount of room to stretch out and relax. It has a firm comfort level, which can be uncomfortable for sensitive backs. This thick mattress minimizes motion transfer so that you won't be awakened by movement. Featuring antimicrobial materials, it impedes the growth of bacteria. It has a 12-inch thickness, preventing any structural problems that thinner mattresses can have.

This thick mattress is eco-friendly, meaning they are constructed with biodegradable, natural substances. Featuring three layers, it delivers extra firmness on pressure points and added stability for your back. It is designed with a memory foam construction, accommodating every possible sleeping position. With resistance to dust mites, it makes it a suitable option for those who suffer from allergies.

If you're looking to upgrade your mattress and care about getting one that will give you a lot of support, the Slumber Solutions Plush Gel Memory Foam King-Size Mattress might be a good choice for you. Available in a king-size, this Slumber Solutions mattress offers plenty of room to spread out and relax. It has a 12-inch thickness, which can appear too large in some bed frames. It has a no-flip construction, eliminating the hassle that accompanies having to flip a heavy mattress. This thick mattress helps eliminate tossing and turning at night, which increases the quality of your sleep. It features a plush comfort level, providing the perfect mix of firmness and softness. Featuring a gel memory foam construction, this thick mattress gives the necessary support for those who suffer from back discomfort. It is resistant to dust mites, lowering your risk of having allergic reactions.

For a good night's rest and ultimate comfort, select a Wolf Mattress Plush Latex Hybrid King-Size Mattress. With a 12-inch thickness, this thick mattress will maintain its shape and form even after prolonged use. With a plush comfort level, it is perfect for those who are looking for extra cushioning, without compromising support and durability. Made with pressure point relief technology, this thick mattress improves comfort and minimizes pain. It has motion separation technology, which decreases the amount of movement you feel. This thick mattress is available in a king-size, so you have a lot space to sleep comfortably. It includes individually-wrapped pocket coils to keep the mattress fresh and cool throughout the night. Designed with a latex hybrid construction, it may feel too "spongy" for some. This thick mattress has a quilted cover, providing added comfort and cushioning. It has fortified edge support, surrounding the perimeter of the entire mattress for added reinforcement.

For a good night's sleep and endless comfort, choose a Priage Firm Euro Top King-Size Mattress. This Priage mattress eliminates motion transfer, making it great for restless sleepers. It offers pressure point relief, making it suitable for stomach sleepers. Designed with a Euro top construction, this Priage mattress will move or lose its shape because the pillow layer is sewn under the cover.

This thick mattress has HD foam and support foam layers. It has a 12-inch thickness, preventing any structural problems that thinner mattresses can have. It includes four layers and features a firm comfort level, which will provide the support required to keep your body straight. Available in a king-size, this thick mattress will provide maximum bed space. It includes individually-wrapped pocket coils, so it reduces pressure points and optimizes comfort. With a jacquard cover, this thick mattress gives your mattress a more luxurious appearance. It features a soft cover, so you can have twice the added comfort.

If you're looking to upgrade your mattress and need more support, the AC Pacific Gel Memory Foam King-Size Mattress might be a good choice for you. Designed with antimicrobial benefits, this AC Pacific mattress protects you from any noxious mold. It reduces motion transfer, making it perfect for light sleepers. Featuring a 12-inch thickness, this AC Pacific mattress can support a lot of weight so it won't sink in easily. Available in a king-size, it ensures that you'll have a lot of room to spread out and have a good night's sleep. It features a gel memory foam construction, drawing heat away from the sleeper due to its better air circulation. This AC Pacific mattress is resistant to dust mites, keeping your sleeping space pest-free and clean.

For a combination of comfort and support, choose the Select Luxury Plush Latex Hybrid King-Size Mattress and enjoy a good night's sleep. This thick mattress has a plush comfort level, which is suitable for anyone searching for the ideal mix of softness and support. It has pressure point relief technology, providing therapeutic benefits. This orthopedic mattress is available in a king-size, so you have a lot of room to sleep comfortably. It features a 12-inch thickness, which provides a lot of foundational support and helps keep it in good condition for longer. With a latex hybrid construction, this orthopedic mattress may feel too "spongy" for some. With two layers, it provides you with higher pain relief and evenly disperses heat to keep you cool while sleeping. This orthopedic mattress features a stretch knit weave, keeping your mattress looking newer for longer.

The Sleep Sync Firm Memory Foam King-Size Mattress is a wonderful choice for an eco-friendly option, without toxic chemicals and low in VOCs. With a 12-inch thickness, this Sleep Sync mattress will stay in good shape and not sink in even after prolonged use. Available in a king-size, it ensures that you'll have a lot of room to spread out and have a good night's sleep. It features a firm comfort level, which is suitable for people who need precise spinal alignment or improved blood circulation. Built with antimicrobial materials, it stands up to any unsafe mildew. This thick mattress reduces motion transfer, making it great for restless sleepers.

Designed with a memory foam construction, this thick mattress lets you toss and turn and then re-contours to your body after you've settled. Featuring three layers, it offers extra firmness on pressure points and added stability for your back. It is eco-friendly so that it has less VOCs and chemicals than ordinary mattresses. With resistance to dust mites, it makes it an ideal option for people suffering from allergies.