Are you wasting valuable sleep time worrying about which mattresses to buy? We’ll assist. Our mattress buying guide shows when and how to get the best discounts. Find the best king-size mattress here. We identified the best soft and firm king-size mattresses for every sleeper at every price point.
You’re in bed a lot, sleeping, working, or watching docuseries. It pays you in the long run to buy the best king size mattresses for your lifestyle. We identified the best bed in a box and memory foam king mattresses to help you sleep well.
What to Consider When Buying the Best King Size Mattress
Know your sleep position before choosing a king-size mattress. Choose your hardness. The firmest mattress is 10 and the softest is 1. Plush or pillow top mattresses are softer. Memory foam is the best mattress. Hybrid mattresses are best for a middle of the road selection.
Budgeting is crucial. Luckily, it’s cheap. Many affordable mattresses are high-quality. Add a mattress topper to a cheap mattress for comfort and protection. To prolong the life of your king-size mattress, get a good protector.
Types of King Size Mattresses
Innerspring mattresses: The most typical kind of mattress is an innerspring mattress. They have a steel coil base and multiple layers of padding for comfort.
Memory foam mattresses: Supportive foams that mold to your body shape are what memory foam mattresses are comprised of. The foam responds to your body heat to soften and contour to your shape while you sleep, before springing back to its original form when you rise.
Latex mattresses: Natural latex foam, which is generated from rubber tree sap, is used to make latex mattresses. The resilience, softness, and support of latex mattresses are well known. They also repel dust mites, mold, and mildew, making them ideal for those with sensitive respiratory systems.
Hybrid mattresses: Memory foam, latex, and innerspring coils are just a few of the mattress components that can be combined to make hybrid mattresses. The springiness and responsiveness of innerspring coils are paired with the softness and support of memory foam.
1. Best overall
Helix Midnight
Pros
- Hybrid of plush and firm
- Ideal for a variety of sleeping positions
- Mattress construction promotes spinal alignment
- 100-night sleep trial
- Free shipping
Cons
- Pricey
The Helix Midnight mattress will help you sleep through the night, even if back pain keeps you up. The best king-size mattress for several sleeping positions is this medium-firm pressure-relieving mattress. Multiple middle layers support the body, preventing nighttime tossing.
Hot sleepers can add a GalcioTex Cooling Cover. The Helix Midnight mattress has a 10-year warranty and is constructed in the US without chemicals. If you don’t like your new mattress after 100 nights of sleep, you can return it.
2. Best value king mattress
Nectar Memory Foam
Pros
- A bargain compared to other high-quality mattresses
- Ideal for hot sleepers
- Therapeutic gel memory foam layer for pressure relief
- 365-night trial
- Forever mattress warranty
- Free shipping and returns
Cons
- Slight odor after first opening
- Heavy box
More than 41,000 five-star reviews have been written about the Nectar Memory Foam—talk about customer pleasure! This memory foam mattress conforms to your body and keeps you cool. Though not inexpensive, this is one of the best budget mattresses available. Good sleep is priceless.
This best king size mattress’s polyethylene fibers keep you cool and comfortable all night. The Nectar is a perfect balance of hardness and softness. See our editor’s Nectar mattress review — she and her cat adore it after a year.
3. Best plush king size mattress
Saatva Classic Innerspring Mattress
Pros
- Deep-body-hugging soft foam and extra pillow top padding
- 365-night home trial
- Free in-room delivery and setup
- Lifetime warranty
- Free mattress and foundation haul-away
Cons
- Pricey
The soft Saatva Classic King-Size Mattress has a three-inch standard pillow top. Recycled carbon steel dual-coils prevent mattress sagging.
The Saatva Classic’s body-hugging soft foam pillow top is padded for comfort. This mattress suits lightweight people who find conventional mattresses excessively firm. Side sleepers love the Saatva Classic’s contouring.
Saatva mattresses are created in America from sustainable, high-quality materials. Organic cotton, herbal antibacterial treatment, and CertiPUR-US foams make this mattress non-toxic. A thistle pulp flame-retardant barrier replaces chemical sprays.
4. Best king size mattress for back pain
Dreamcloud Premier Mattress
Pros
- Dynamic transition layer for proper spinal alignment
- Memory foam layer for pressure relief
- Plush soft foam layer for extra comfort
- 365-night in-home trial
- Lifetime warranty
- Free shipping
Cons
- Pricey
People with back discomfort should try the Dreamcloud Premier Mattress. This mattress relieves pressure and uniformly distributes weight, preventing uncomfortable places. The Dreamcloud has a buttery-soft cashmere-blend quilted cover and seven layers of memory foam and soft foam to cradle the head and torso for a restful sleep.
For hot sleepers, this is one of the best king size mattresses. The Dreamcloud slept our editor-at-large for almost a year. For those who struggle to regulate their body temperature, its cooling technology is a game-changer.
5. Best bed in a box king mattress
Nolah Evolution
Pros
- Best bed in a box for side, back or stomach sleepers
- 15-inches thick with seven layers of high-quality materials
- Two-inches of high resilience foam offers complete body support
- 120-night mattress trial
- Free shipping
- Lifetime warranty
Cons
- So thick it may be hard to get fitted sheets to stay on
One of the best king size mattress in a box options is the Nolah Evolution Hybrid Mattress. The 15-inch mattress has seven layers and is built to last, despite the boxed bed concept.
The brand’s foam relieves joint and muscular pressure with billions of tiny air bubbles. Its eight-inch coil support system is strong and stable. The individually-wrapped coils adjust to movement and weight distribution for optimal spinal alignment in any sleeping position.
The mattress looks great when unboxed. An organic cotton Euro mattress topper cools the Nolah Evolution. Graphite-infused cooling foam and a permeable border gusset absorb heat. Add a cooling mattress pad for hot sleepers.
6. Best firm king size mattress
Bear Elite Hybrid
Pros
- Three available firmness options
- Copper-infused memory foam with antimicrobial benefits
- Reinforced edge coils
- 120-night risk-free trial
- Free shipping
- Lifetime warranty
Cons
- Mattress build favors side sleepers
The Bear Elite Hybrid Mattress comes in three firmness options, like Goldilocks’ personal mattress. This hybrid mattress is the best firm king size mattress. This hybrid mattress’s phase change cover keeps it cool. The breathable Celliant fibers and copper-infused memory foam keep hot sleepers cool all night.
A zoned coil system properly distributes weight and provides lumbar support where you need it. You can sleep comfortably knowing it’s safe for you and the environment because it’s made of eco-friendly materials and CertiPUR-US certified memory foam.