The Best King Size Memory Foam Pillow
Our research-backed guide to the top king size memory foam pillows, featuring adjustable loft, cooling covers, and certified quality for side, back, and stomach sleepers.
By Kylie Fields
Updated September 10, 2026
Choosing the right king size memory foam pillow can transform your sleep quality, providing proper spinal alignment and pressure relief.
Our team at BestProducts has analyzed dozens of models, comparing specifications, expert opinions, and verified buyer feedback to identify the most reliable options for every sleep position and budget.
In this guide, we highlight top-rated king size memory foam pillows that offer features such as adjustable loft, cooling covers, and certified materials.
Whether you are a side sleeper needing extra height or a stomach sleeper requiring a flatter profile, our research-based picks cover your needs. For those recovering from surgery, our guide to the best pillow after ACDF surgery offers specialized recommendations.
Below, you will find our curated list of the best pillows available today.
DOWNSTORIA Shredded Memory Foam Pillows King
This set of two king-size pillows uses a shredded memory foam core blended with down alternative to provide medium-firm support. The gusset design helps maintain loft and shape, while the peach-skin cover offers a soft, breathable surface. Suitable for back, side, and stomach sleepers.
Pros
- Ultra-soft peach skin cover
- Shredded memory foam with down alternative
- Gusset design prevents flattening
- Medium firmness suits various sleep positions
- Set of two for value
Cons
- King size may not fit standard pillowcases
- May require fluffing after unpacking
- Only one firmness option available
SofGlowly 2.75-Inch Ultra Thin King Pillow
Designed for stomach and back sleepers, this 2.75-inch low-profile memory foam pillow offers medium-firm support with gel-infused cooling and a dual-sided washable cover. Its CertiPUR-US certified foam helps reduce motion transfer.
Pros
- Very low profile for stomach sleepers
- Cooling gel and breathable foam design
- Machine-washable zippered cover
- Medium-firm support with pressure relief
- CertiPUR-US certified foam quality
Cons
- Only 2.75 inches may lack support for side sleepers
- Limited height options in this single size
SUPA MODERN King Cooling Pillows (2-Pack)
This set of two king-size pillows uses shredded memory foam that allows you to adjust the loft by removing or adding filling. The gel-infused foam and breathable cover actively dissipate heat, making these pillows suitable for hot sleepers and all sleeping positions.
Pros
- Adjustable loft and firmness
- Cooling gel-infused memory foam
- CertiPUR-US certified foam
- Zero odor out of the box
- Ergonomic support for all sleep positions
Cons
- Requires 24-hour expansion after unpacking
UYWO King Size Memory Foam Pillows Set
This king-size pillow set from UYWO offers adjustable loft via a dual-zipper system, letting side, back, and stomach sleepers fine-tune firmness. The pillows feature phase-change material for a cool or warm side, plus a nano-barrier that blocks 99% of pet dander and pollen. The viscoelastic foam and gel particles provide pressure relief, and the design is chiropractor-approved for neck support.
Pros
- Adjustable loft with dual-zipper system
- Dual-temp sides (cooling and warming)
- Pressure-relieving memory foam and gel
- Allergen-blocking fabric (OEKO-TEX certified)
- Chiropractor-approved neck support
Cons
- Heavy set (over 10 lbs total)
- Adjusting loft requires manual foam removal
LOVELYREST King Cooling Pillows (2-Pack)
These king pillows combine shredded memory foam with cooling fabric to prevent overheating. The adjustable loft lets you add or remove filling for personalized support, making them suitable for side, back, and stomach sleepers. The removable cover is machine-washable for easy maintenance.
Pros
- Adjustable loft for customized comfort
- Cooling fabric helps hot sleepers
- Firm support for neck and head
- Machine-washable removable cover
- Comes as a set of two king pillows
Cons
- Limited color options (blue/white only)
Yettbea Bamboo Cooling Shredded Memory Foam King
This king-sized pillow set offers dual-sided comfort with a cooling surface on one side and soft bamboo fabric on the other. Its adjustable shredded memory foam fill lets you customize loft and support, making it suitable for side, back, and stomach sleepers who want a cooler, ergonomic sleep experience.
Pros
- Adjustable loft for customized comfort
- Dual-sided fabric for cooling or softness
- Ergonomic shape reduces neck and shoulder pressure
- Safe materials with certifications
- Good for hot sleepers
Cons
- May require time to adjust fill to preference
Baskbed Cooling Pillows King Size Set of 2
This two-pack of king pillows uses a cooling fabric cover on one side and a breathable knit on the other, with a shredded memory foam and microfiber fill. The zippered design lets sleepers adjust the amount of filling to find their preferred loft and support.
Pros
- Adjustable fill for personalized support
- Cooling and breathable cover options
- Machine-washable zippered cover
- Hybrid fill balances softness and support
- Works for multiple sleeping positions
Cons
- Needs to air out 1 to 2 days before first use
- Only grey-side color option listed
Coop Home Goods Original Adjustable King Pillow
This king-sized pillow offers fully adjustable fill, letting back, side, and stomach sleepers fine-tune loft and firmness. It uses fresh memory foam and microfiber, and carries CertiPUR-US and GREENGUARD Gold certifications for safety.
Pros
- Fully adjustable fill for personalized comfort
- Includes extra fill bag for further customization
- CertiPUR-US and GREENGUARD Gold certified
- Made with fresh, never recycled memory foam
- Soft, breathable Lulltra fabric cover
Cons
- Foam firmness may change with temperature
NightHug 5-Inch Memory Foam Mattress Topper King
For those looking to upgrade their bed without buying a new mattress, the NightHug 5-Inch topper combines shredded memory foam with a down-alternative layer for balanced support and pressure relief. Elastic anchor straps keep it secure, while the cotton top and mesh sides promote airflow to prevent overheating.
Pros
- Secure fit with elastic anchor straps
- Balanced support from memory foam and down alternative
- Breathable and moisture-wicking for cool sleep
- Quilted checkerboard pattern adds style and airflow
Cons
- Requires up to 24 hours to fully expand after unpacking
Alkyonos Shredded Memory Foam Pillow
These adjustable shredded memory foam pillows from Alkyonos come in a king-size set of two, designed to accommodate side, back, and stomach sleepers. The fill can be added or removed to customize loft and firmness, while the breathable OEKO-TEX certified cover ensures comfort and safety.
Pros
- Adjustable loft for personalized comfort
- Supports neck and spine alignment
- High-quality shredded memory foam
- Stylish pattern adds decor appeal
- Breathable OEKO-TEX certified cover
HIMOON King Size Memory Foam Pillow 2 Pack
This two-pack of king pillows uses slow-response memory foam and a cooling gel layer to reduce heat buildup. It suits back, stomach, and side sleepers looking for pressure relief and easy care with a removable washable cover.
Pros
- Cooling gel layer helps prevent overheating
- Washable cover simplifies cleaning
- Good for all sleep positions
- Vacuum packaging keeps pillow clean on arrival
Cons
- Memory foam core cannot be machine washed
- May take hours to fully expand after unpacking
- Blue color may not suit all decor
Meoflaw Adjustable King Pillows Set
This set of two king-sized pillows from Meoflaw uses a dual zipper design to let you customize the loft by adding or removing the shredded memory foam and down alternative fiber blend. The medium-firm fill aims to accommodate back, side, and stomach sleepers while the washable cover simplifies maintenance.
Pros
- Adjustable loft for personalized comfort
- Suitable for all sleep positions
- Removable and machine-washable cover
- Breathable polyester fabric for cool sleep
- Fast rebound after vacuum packaging
Cons
- Requires manual adjustment of filling
- Needs 24-48 hours to fully expand after unpacking
- Cover is polyester, not natural fiber
Best King Size Memory Foam Pillow Buying Guide
Fill Material and Density
The type of memory foam affects support and longevity. Traditional solid memory foam offers uniform support but may retain heat, while shredded memory foam allows airflow and adjustability.
Many top-rated pillows use CertiPUR-US certified foam, ensuring durability and low VOC emissions. A higher density (typically 3, 5 lbs/ft³) indicates better support and resilience over time.
For example, pillows like the Coop Home Goods Original Adjustable Pillow use cross-cut memory foam that can be added or removed to customize loft. This adjustability makes shredded foam popular among sleepers who need precise support.
When evaluating, look for certifications such as CertiPUR-US and GREENGUARD Gold, which indicate the foam meets strict safety standards.
Loft and Adjustability
Loft, or pillow height, directly influences spinal alignment. Side sleepers generally need a higher loft (4, 6 inches) to fill the gap between the shoulder and head, while back sleepers prefer medium loft (3, 5 inches) and stomach sleepers require a low loft (2, 3 inches).
Adjustable pillows allow you to remove or add fill to achieve your ideal height.
Pillows with a gusseted design provide consistent edge support and maintain loft over time. For a deeper dive into adjustability, see our guide to the best adjustable pillow. If you have specific neck issues, our cervical support pillow review may offer additional insights.
Cooling and Breathability
Memory foam’s heat retention is a common concern. Many modern pillows incorporate cooling technologies such as gel infusions, phase-change materials, or breathable covers made from bamboo rayon, cotton, or cooling polyester blends. Pillows with a removable, machine-washable cover also improve airflow and hygiene.
If you frequently sleep hot, consider options like the SUPA MODERN Cooling Pillows King Size Set, which combine shredded memory foam with a breathable cover. For additional recommendations, our cooling body pillow guide covers larger pillows designed for temperature regulation.
Cover and Maintenance
A high-quality cover extends the life of your pillow and simplifies cleaning. Look for pillows with removable, zippered covers that are machine-washable. Materials like bamboo-derived rayon, Tencel, or premium cotton offer softness and breathability. Some covers also feature anti-microbial or dust-mite-resistant properties.
Regular cleaning is essential for allergy sufferers. Our best dust mite pillow cover guide provides tips on protecting your pillow. Additionally, pillows with a gusseted design tend to hold their shape better after washing; see our gusseted pillow review for details.
Certifications and Safety
Safety certifications ensure your pillow is free from harmful chemicals. CertiPUR-US certification guarantees foam meets standards for content, emissions, and durability. GREENGUARD Gold certification evaluations for over 10,000 chemicals and is especially important for sensitive individuals or children. Pillows with these certifications provide peace of mind.
Many of our top picks, including the DOWNSTORIA Shredded Memory Foam Pillows, hold these certifications. For broader sleep surface safety considerations, our Sleep & Bedding category page links to guides on mattresses and toppers.
Why You Should Trust Us
BestProducts is an independent review site dedicated to helping you make informed purchasing decisions. Each product in this article is evaluated using our proprietary BP Score, a 0-to-10 scale based on consistent criteria.
We assess specifications, expert review consensus, verified buyer feedback, and published data from reputable sources. We do not conduct our own product trials; our evaluations are grounded in research, published data, expert review consensus, and verified buyer feedback.
Our editorial team has years of experience in consumer electronics, home goods, and sleep products. We continuously update our research to reflect the latest product releases and user insights. For more about our methodology, you can explore our Sleep & Bedding hub.
Final Thoughts
Best Overall: Coop Home Goods Original Adjustable Pillow, With its customizable cross-cut memory foam, CertiPUR-US certification, and ability to suit all sleep positions, this pillow earned the highest BP Score in our analysis. Its removable cover and 5-year warranty add to its value.
Best Cooling: SUPA MODERN Cooling Pillows King Size Set of 2, This set combines shredded memory foam with a breathable cover to reduce heat buildup. An excellent choice for hot sleepers who need two pillows for a consistent sleep surface.
Best Budget: DOWNSTORIA Shredded Memory Foam Pillows King Size Set of 2, At a competitive price point, this two-pack offers adjustable shredded foam and a gusseted design, making it a value leader for back and side sleepers without sacrificing quality.
Best for Stomach Sleepers: SofGlowly Ultra Thin Flat Pillows King Size, With a slim 2.75-inch profile, this pillow provides minimal loft ideal for stomach sleepers who need to keep their neck neutral. Its cooling memory foam cover helps with temperature regulation.
Frequently Asked Questions
Is a king size memory foam pillow good for side sleepers?
Yes, many king size memory foam pillows offer adjustable loft that side sleepers can increase to fill the shoulder gap. Models like the Coop Home Goods pillow allow you to add fill for extra height.
See our best orthopedic pillow for side sleepers for specialized options.
How do I choose the right loft for a memory foam pillow?
Your sleep position determines ideal loft: side sleepers need 4, 6 inches, back sleepers 3, 5 inches, and stomach sleepers 2, 3 inches. Adjustable pillows let you experiment. Our guide for restless sleepers covers how loft affects comfort.
Do memory foam pillows sleep hot?
Traditional solid memory foam can trap heat, but many modern pillows use gel infusions, shredded foam, or breathable covers to improve airflow. Look for pillows labeled “cooling” or with bamboo/cotton covers.
How do I clean a memory foam pillow?
Most memory foam pillows have a removable, machine-washable cover. Spot-clean the foam with mild detergent and air dry. Avoid soaking the foam.
How long does a memory foam pillow last?
High-quality memory foam pillows typically last 2 to 3 years with proper care. Signs of wear include permanent indentation or loss of support. Regular fluffing and using a pillow protector can extend life. Our extra firm pillow review discusses durability factors.
Can a memory foam pillow cause neck pain?
If the loft is too high or too low, any pillow can cause discomfort. Memory foam adapts to your shape, but proper alignment is key. Adjustable pillows minimize this risk. For neck pain, consider our orthopedic pillow for neck pain guide.
Is a memory foam pillow good after surgery?
Memory foam pillows can provide gentle support during recovery. However, for specific surgical needs, our guide to the best wedge pillow after surgery offers targeted recommendations.
About the author
Kylie is BestProducts's pillow and sheet writer, weighing loft, fill quality, weave, and how each fabric breathes through the night. She helps readers fix a stiff neck and sleep cooler.