10 Best King Mattress Under 500 of August 2025

• THE RIGHT COMBINATION - Our special recipe for rejuvenating rest? Refreshing green tea and moisture-absorbing Activ charcoal infused into pressure-relieving memory foam that cradles your shape so you awake free of aches and pains and fresh as a daisy
• PRESSURE-RELIEVING FOAMS - 3 inches conforming memory foam, 2 inches soft, airflow enhancing comfort foam, and 7 inches durable, high density base support foam; ideal for side sleepers and petite to average weight sleepers
• CERTIPUR US CERTIFIED - Highest quality foam is CertiPUR US Certified for durability, performance, and content
• EXPERTLY PACKAGED - Our technology allows this mattress to be efficiently compressed into one box that’s easily shipped and maneuvered into the bedroom; simply unbox, unroll and this mattress does the rest, expanding to its original shape within 72 hours
• Worry-free 10 year limited warranty included; twin mattress supports a maximum weight of 250 lbs, while all other sizes can support up to 500 pounds

Zinus

• Gorgeous sapphire blue euro pillow top
• Beautifully detailed stretch knit quilted cover optimizes conforming properties
• High-quality memory foam contours to your body for a comforting feel
• Individually wrapped innerspring coils provide orthopedic support and prevent motion disturbance
• Naturally hypoallergenic and resistant to allergens, mold, bacteria, and dust mites and meets CertiPUR-US program standards for performance, emissions, and durability
• Medium-Plush Feel and Adjustable Base Friendly; 10 Year
• Mattress ships compressed, rolled in a box conveniently delivered to your door for easy set-up; frame/foundation/base not included

Vibe

• King size bed in a box: For deep sleep you've always dreamed of, this body contouring memory foam mattress delivers; 12 inch mattress comes compressed and rolled in a box for your convenience
• Sleep soundly: Designed with layers of memory foam for firm support and pressure relief. The support foam core reduces motion transfer for peaceful, undisturbed sleep
• Maintenance free: Made of hypoallergenic material to keep out dust mites, pollen, mold and pet dander—perfect for kids or adults who suffer from allergies
• King size: Measures 75" W x 79" D x 12" H and is compatible with most king bed frames
• Ready for instant enjoyment: Arrives in a box. Simply unbox, cut the protective wrap, unroll and watch the mattress expand. Mattress is safe to sleep on immediately but can take 72+ hours for any risidual odors from packaging to dissipate and for mattress to completely expand based on ambient room temperature, humidity, air pressure & ventilation.

Signature Design by Ashley

• King size bed in a box: For supportive, dreamy sleeping, this mattress brings it home with comfortable layers; Plus, it comes in a box, so it's easier than ever to get a better night's rest
• Hybrid mattress: Mattress is designed with gel memory foam, upholstery grade comfort support foam, and 360 individual power packed wrapped coils for maximum lumbar support. Quilt foam gives you that soft, cozy comfort you crave
• Maintenance free: Made of hypoallergenic material to keep out dust mites, pollen, mold and pet dander—perfect for kids or adults who suffer from allergies.2 perimeter rows of 9 inch 13-gauge pocketed coils
• King size: Measures 76" W x 79.5" D x 12" H and is compatible with most king bed frames
• Ready for instant enjoyment: Arrives in a box. Simply unbox, cut the protective wrap, unroll and watch the mattress expand. Mattress is safe to sleep on immediately but can take 72+ hours for any risidual odors from packaging to dissipate and for mattress to completely expand based on ambient room temperature, humidity, air pressure & ventilation.

Signature Design by Ashley

• COOL & HIGHLY BREATHABLE- Novilla king size mattress constructed with a 4-layer all-foam system. The foam mattress on top is a gel-infused memory foam that keeps you cool. The egg crate designed foam layer increases airflow through all areas of this king size memory foam mattress. Mattresses’ quality cover with Bamboo fabrics also enhance 30% breath-ability. Ensures you stay asleep longer with this bed mattress.
• RELIEVES PAINS & DAMPENS PARTNER’S MOVEMENTS- Novilla 12'' gel memory foam medium firm king mattress includes 4 different foam layers. Gel memory foam is combined with comfort foam to distribute pressure and mold to your body. And the two layers high density foam that improve durability, which to give your body support for proper spinal alignment. Also to resist sagging and prevent roll-off. Whether you sleep alone or next to a partner, there is no disruption.
• A SAFE & COMFORTABLE SLEEP ENVIRONMENT- Mattress is made of CertiPUR-US Certified foam, without any harmful off-gassing and substances like formaldehyde, mercury, and other heavy metals. Removable bed mattress cover use skin-friendly rayon cotton fabric, heavenly soft to touch. Novilla king size memory foam mattress gives you a healthier and cloud-like experience.
• KING MATTRESS IN A BOX & FITS ALL BED FRAMES- Such fun to receive a mattress that’s rolled and compressed in a box . Follow the instructions and see how the magic happens. It is easy to set up and fits all kinds of bed frames, even on the floor. Mattress is recommended 72 hours for air out and reshape.
• HASSLE FREE FOR RETURN & REFUND- Mattresses are covered by a 10-year limit and 30-days money-back return policy. With our professional customer care, we help deal with any dissatisfaction problems. You can enjoy this king memory foam mattress without concerns while you are following your dream.

Novilla

• AS COOL AS IT GETS - Settle in to a bed made with our most cooling formula yet, promising perfectly temperature-regulated sleep and a clean feeling night after night, all thanks to our enveloping memory foam packed with cooling gel and green tea
• PRESSURE-RELIEVING FOAMS - 2 inch ultra-cooling gel and green tea infused memory foam, 3 inches soft comfort foam, and 7 total inches durable high density base support foam; ideal for side sleepers and average-weight sleepers
• CERTIPUR US CERTIFIED - Highest quality foam is CertiPUR US Certified for durability, performance, and content
• EXPERTLY PACKAGED - Our technology allows this mattress to be efficiently compressed into one box that’s easily shipped and maneuvered into the bedroom; simply unbox, unroll and this mattress does the rest, expanding to its original shape within 72 hours
• Worry-free 10 year limited warranty included; twin mattress supports a maximum weight of 250 lbs, while all other sizes can support up to 500 lbs

Zinus

• 8 inch hybrid mattress combine hypallergenic memory foam with the traditional support of an innerspring mattress for a medium-firm feel perfect for kids rooms, guest beds, or an affordable low-profile option
• A plush layer of memory foam helps align the spine to minimize pressure points for increased comfort
• Finished with a cozy knit cover, this mattress is compressed as a bed in a box for convenient delivery and setup
• Available in a medium firm 8 inch profile, a medium 10 inch profile, or a plush 12 inch profile that also features gel infusions and individually encased coils
• Packaging process may leave small brown flecks called carbons in the mattress packaging; These carbons are harmless pieces of plastic and will not stick to your mattress; 10 year limited warranty

Linenspa

• {MATERIAL & CONSTRUCTION}: Iyee Nature 8 inch king mattress dimensions: 76"*80"*8".To improve support and heat dissipation, Iyee Nature 8 inch Cooling-Gel Memory Foam Mattress is designed with three layers all-foam system. To improve support and heat dissipation，mattress include 2” memory foam, 1” comfortable layer, and 5” high density base support foam for ultimate comfort. It includes a soft hypoallergenic cover that is washable for your convenience.
• {EASY SHIPPING & SET-UP}:Fast shipping and great customer service.Mattress is compressed and packaged in a box for shipping, allowing it to easily be delivered to your door and expand to its full lofty shape inside your home. They fit all frames, such as box spring, floor, slatted base, flat platform or adjustable bed, hospital bed.
• {WARRANTY}:We are a manufacturer specializing in the production and processing of mattresses, We also have professional production and R&D teams. guarantee the best price mattress you can get. Our bed mattress come with 10 years warranty. If for any reason you are unsatisfied, contact us at any time for support. NOTE: Please allow up to 72 hours for the mattress to fully expand and for any potential odors to dissipate.
• {HEALTH & HYPOALLERGENIC MATTRESS}: The foam has been certified by CertiPUR-US and Oeko-Tex Standard 100 without harmful substances like formaldehyde, mercury, and other heavy metals.
• {COMFORTABLE & BREATHABLE}:Medium-plush feel; memory foam, transition foam, and bring soft and gentle comfort underpinned by a well-balanced layer of support.Memory foam conducive to continuous airflow & breathable. no-sink support foams adapt and conform to your body for optimal pressure relief.

Iyee Nature

• Ssecretland 12'' Gel Memory Foam Mattress with three Layered Foam : 3 inches HD gel memory foam, 2 inches of HD comfort foam layer and 7 inches of HD base support foam for ultimate comfort. It includes a soft hypoallergenic cover layer that is washable for your convenience.
• Gel foam disperses temperature accumulation to maintain a constant mattress temperature. help your body for a more comfortable night's sleep. high-density base support foam provides surrounding support and responsive relief that helps evenly distribute pressure points in any sleeping position. This ergonomics design enables the mattress to mold to the sleeper's natural shape and keeps you cool while you sleep, it strikes a balance between firmness and softness.
• The foam has been certified by CertiPUR-US and Oeko-Tex Standard 100 without harmful substances like formaldehyde, mercury, and other heavy metals. eco-friendly and durable. The mattress meets CFR1633 Standard which means itself is hard to burn,therefore safe to use.
• Mattress ships compressed, rolled and shipped in a box conveniently delivered to your door for easy set-up; They fit many frames, such as box spring, floor, slatted base, flat platform or adjustable bed.
• We are a manufacturer and have professional production and R&D teams. guarantee the best price mattress you can get. Our bed mattress come with 10 years warranty. If for any reason you are unsatisfied, contact us at any time for support. NOTE: since the mattresses are compressed, rolled and shipped in a box, Please allow up to 72 hours for the mattress to fully expand. but may take longer due to other factors,like cold weather.

S SECRETLAND

• Three inches of ultra plush memory foam that conforms to your curves and hugs you to sleep
• Infused with temperature regulating gel beads that capture and dissipate heat to help prevent overheating
• Comfortable memory foam distributes weight evenly to align the spine and alleviate pressure points. Materials - 100% Polyurethane Memory Foam Gel Beads
• Available in plush 2 inch and 3 inch profiles; The 3 inch topper will hug your body more than the 2 inch topper
• A comfortable and affordable way to rejuvenate an old mattress, soften a hard mattress, and prolong mattress life; Backed by a 3 year warranty

Linenspa