Both models of the Sealy FlexGrid Mattress received very good marks during motion isolation testing. The hybrid and foam options effectively minimize motion transfer, making the mattress a good choice for those who are easily disturbed at night. The FlexGrid also outperformed other hybrid mattresses, thanks to its memory foam, HexGel, and polyfoam layers.
Our testers found that their partner’s movements were only slightly noticeable on the foam mattress. The memory foam closely contours to each sleeper, preventing movement from traveling from one side of the bed to the other. People who share their bed with a partner, children, or pets should benefit from both options.
When you buy through our links, we may earn a commission. Products or services may be offered by an affiliated entity. Learn more.
Sealy FlexGrid Review – Test Lab Ratings
Staff Writer
Methodology
Up-to-Date
Overall Rating
8.5
$1,569 from Sealy (queen)
Price Range: $1,269 – $3,698
Mattress Type: Hybrid
Firmness Options: Medium Firm (6)
At a Glance
The Sealy FlexGrid mattress is designed for sleepers who value adaptability and support. Its standout feature is the FlexGrid layer, a hyper-elastic polymer grid that is particularly suitable for those who seek relief from pressure points and want a cool sleep experience.
Ratings Summary
Motion Isolation
7/10
Edge Support
7.5/10
Temperature Control
7.5/10
Ease of Movement
6.5/10
Off Gassing
7/10
Pressure Relief
8/10
Pros
-
Comfortable for side sleepers across all weight categories and combination sleepers
-
Sleeps very cool
-
Available in split size for partners with different preferences
Cons
-
The hybrid model is notably more expensive
-
Not available in a traditional twin size
-
Some sleepers may not enjoy the feel of the HexGel
-
Couples may prefer a more responsive surface with more edge support
Table of Contents
The Sealy FlexGrid Mattress uses advanced technology to meet the needs of a wide range of body types and sleep styles. Sleepers can choose from either a hybrid or all-foam model.
Sealy, one of the most established mattress manufacturers in the U.S., features several product lines. These include Sealy Essentials, Posturepedic, Posturepedic Plus, the Cocoon, Sealy Naturals, and the FlexGrid. The FlexGrid falls in the middle of Sealy’s price range options.
A proprietary HexGel material adds a layer of pressure relief and breathability. The gel is engineered to respond to the weight of each sleeper and enhance motion isolation.
Our testing revealed that combination and side sleepers especially benefited from the balance of contouring and support. The hybrid design excels at temperature regulation, making it a suitable option for those who overheat easily. A more affordable price tag makes the all-foam model an appealing option for value shoppers.
We’ll take a closer look at the FlexGrid and examine its construction, performance, and how different sleepers respond to each model to help you determine if it’s the best mattress for you.
- Choose the foam model if… you want a mattress with excellent pressure-relieving abilities but prefer moderate contouring. The foam layers contour to each sleeper’s shape, and the HexGel helps keep sleepers on top of the mattress. This makes it a good option for those who prefer the feeling of sleeping “on,” rather than “in,” a mattress. While it doesn’t sleep as cool as the hybrid model, we found the foam model offered better temperature regulation than other foam mattresses.
- Choose the hybrid model if… you want the contouring feel of foam but tend to overheat at night. With a pocketed coil support core, the hybrid offers better airflow and temperature regulation. Those who share their bed will appreciate the bed’s motion isolation abilities, and sleepers who want a responsive yet conforming surface should find the hybrid model meets their needs.
Let us help you find the perfect bed
Answer a few questions to find the right mattress for your unique needs
Sleeping Style and Body Weight
Sealy FlexGrid – Foam
Sleeper Type
Side Sleepers
Back Sleepers
Stomach Sleepers
Sealy FlexGrid – Hybrid
Sleeper Type
Side Sleepers
Back Sleepers
Stomach Sleepers
Side Sleepers
Side sleepers across all weight categories should find both models offer a balance of contouring and support. Although our side-sleeping testers between 130 and 230 pounds benefited the most from the FlexGrid, sleepers outside this weight category also found the bed provided adequate support.
The memory foam comfort layer prevents pressure points from forming in the shoulders and hips and keeps the spine level. The memory foam moderately contours to the body, making it a good option for sleepers who enjoy the cushioning feel of memory foam but tend to overheat easily.
The HexGel layer consists of individual tiles that move independently for customized support. It’s designed to keep sleepers on top of the mattress rather than allowing them to sink too deeply into the surface. This, along with the polyfoam layer, offers side sleepers over 230 pounds more support than other all-foam mattresses. Additionally, pocketed coils in the hybrid mattress provide sleepers with targeted support.
Back Sleepers
The Sealy FlexGrid Mattress works best for back sleepers under 230 pounds. Testers in this weight category found the mattress promoted proper spinal alignment while preventing excessive sinkage in the hips. Both models conform to cushion the lower back.
In addition to the memory foam layer, the HexGel is designed to cradle the whole body. It stretches around the hips and shoulders for an extra layer of support and pressure relief.
Pocketed coils typically offer back sleepers a slightly more supportive, responsive feel, while all-foam beds have a bit more give. However, our testers didn’t find a noticeable difference between the two FlexGrid models.
Those over 230 pounds felt that the foam and hybrid models performed adequately but lacked the support they needed for optimal comfort. The mattress allows the midsection to sink too far for these sleeper types to maintain spinal alignment.
Stomach Sleepers
Our stomach-sleeping testers under 230 pounds benefited the most from the Sealy FlexGrid Mattress. Since these sleeper types require a more supportive sleep surface, the medium firm (6) feel helps support the midsection for proper spine and neck alignment. Softer foam beds often permit too much sinkage in the hips, allowing the spine to bend into a U shape.
The memory foam in the FlexGrid cushions the hips to prevent pressure points from forming. The HexGel is engineered to naturally bend beneath the sleeper’s weight while preventing excessive sinkage. Both models are a good option for people between 130 pounds and 230 pounds who prefer a mattress with moderate contouring.
Mattress Performance
In addition to the hands-on feedback from our team, we conduct a number of quantitative tests in our Test Lab. The below ratings are based on the experience of our testers.
Other Beds You Might Like
Sealy Posturepedic Hybrid Mattress
Overall Rating:
7.9 /10
Price Range:
$1,149 – $2,378
Mattress Type:
Hybrid
Firmness Options:
Soft (3), Firm (7)
Purple Mattress
Overall Rating:
8.1 /10
Price Range:
$799 – $1,798
Mattress Type:
Foam
Firmness Options:
Medium Firm (6)
Serta Perfect Sleeper Renewed Night
Overall Rating:
7.9 /10
Price Range:
$899 – $1,399
Mattress Type:
Hybrid
Firmness Options:
Medium Soft (4), Medium (5), Firm (7)
Simmons Beautyrest Harmony
Overall Rating:
7.9 /10
Price Range:
$999 – $1,899
Mattress Type:
Hybrid
Firmness Options:
Medium Soft (4), Medium (5), Medium (5), Firm (9)
Tempur-Pedic TEMPUR-Adapt
Overall Rating:
8.0 /10
Price Range:
$1,499 – $2,998
Mattress Type:
Foam
Firmness Options:
Medium (5)
Beautyrest Black
Overall Rating:
8.5 /10
Price Range:
$2,249 – $3,199
Mattress Type:
Hybrid
Firmness Options:
Medium Soft (4), Medium Firm (6)
Sealy FlexGrid Mattress Review Breakdown
The Sealy FlexGrid Mattress comes in all-foam and hybrid construction, both of which are wrapped in a cover made of SealyChill fibers, a proprietary treatment applied to the spun fibers designed to keep the mattress cool-to-the-touch. The cover also receives an antimicrobial treatment intended to resist dust mites and allergens.
At 10 inches tall, the foam model features a layer of memory foam atop a HexGel layer engineered for maximum airflow and pressure relief. Our testers found the comfort layer offered moderate contouring and pressure relief while still keeping the spine aligned. A layer of firm polyfoam below helps to evenly distribute weight and provides additional support, offering a more supportive feel than other all-foam mattresses.
The HexGel consists of honeycomb-shaped pockets made of hyper-elastic polymer engineered to cater to the shape of each sleeper. The gel quickly rebounds to its original shape, making it more responsive than traditional memory foam. The HexGel is designed to flex and naturally adapt to pressure, preventing it from feeling too firm or too soft. The bed’s polyfoam support core gives the bed stability and reinforces the upper layers.
Like the foam model, the 12-inch hybrid begins with a memory foam comfort layer above layers of HexGel and polyfoam. All three materials work together to absorb movement and provide optimal pressure relief. With its open pockets, the HexGel improves breathability, helping to keep sleepers cool throughout the night.
The support core features individually pocketed coils, which helps improve airflow and pressure relief. The perimeter is reinforced with durable coils, providing additional edge support along the mattress edges. The combination of pocketed coils and a HexGel layer give the hybrid model excellent temperature regulation.
Both models are CertiPUR-US certified, meaning they are free of harmful substances such as formaldehyde, heavy metals, and flame retardants. Low VOC (volatile organic compounds) emissions signify sleepers will experience fewer off-gassing odors after unboxing the mattress.
|
Firmness |
Medium Firm – 6 |
|---|---|
|
Mattress Type |
Foam/Hybrid |
|
Construction |
The Sealy FlexGrid Mattress comes in an all-foam or hybrid construction, both of which feature a cover consisting of SealyChill fibers. A comfort layer made of memory foam, HexGel, and polyfoam cushions pressure points and helps keep the spine level. The foam option features a polyfoam support core, while the hybrid model has a pocketed coil support core. Cover Material:SealyChill Fibers Comfort Layer:
Memory Foam, Polymer Grid (HexGel), Support Core:Polyfoam or Pocketed Coils |
Mattress Sizing
This mattress comes in six sizes, including twin long and split California king for additional flexibility.
Trial, Warranty, and Shipping Policies
Availability
Customers can purchase the Sealy FlexGrid online from the Sealy website or over the phone. The mattress is not currently available on Amazon or in brick-and-mortar stores.
Orders ship for free within the contiguous U.S. Sealy ships to Alaska and Hawaii for an additional fee.
Shipping
The Sealy FlexGrid Mattress comes with free standard shipping to the contiguous U.S. Sealy ships to Alaska and Hawaii for an additional fee. Each mattress is made to order before being compressed, sealed in plastic, and placed in a box.
Sealy offers White Glove delivery with each mattress purchase. Customers can expect their mattress to arrive two to three weeks after placing the order. Expedited shipping is available for additional cost. An individual 18 or over must be present to receive and sign for the delivery.
No assembly is required. The delivery service includes setup in the specified room.
Additional Services
Customers ordering a Sealy FlexGrid receive free White Glove delivery and old mattress removal upon request. Mattress removal is on a one-to-one basis, meaning if one mattress is purchased, only one old one will be removed.
Sleep Trial
The Sealy FlexGrid Mattress comes with a 90-night sleep trial. If the bed is unsatisfactory at any point, buyers can contact customer service to return for a full refund. However, since new mattresses have a break-in period, Sealy recommends customers try their new mattress for at least 30 days.
There is a $175 return fee for In-Home Delivery items. Refunds minus the return fee are issued within one to two business days.
Warranty
Each Sealy FlexGrid Mattress comes with a 10-year limited warranty applicable only to the original purchaser. It covers manufacturing and material defects that occur during normal use with a proper bed frame or foundation.
If the mattress is defective, Sealy will repair or replace it with an identical or comparable model. Customers are responsible for any shipping costs.
The warranty only applies to new mattresses and doesn’t cover damage from abuse, improper foundation, odors, mold, or normal indentation of less than 1.5 inches for quilted spring mattresses and .75 inches for non-quilted foam and hybrid mattresses.
Still have questions? Ask our community!
Join our Sleep Care Community — a trusted hub of product specialists, sleep health professionals, and people just like you. Whether you’re searching for the perfect mattress or need expert sleep advice, we’ve got you covered. Get personalized guidance from the experts who know sleep best.
Jenna is a freelance writer with a focus on health and wellness. She has almost a decade of healthcare experience writing on topics such as sleep and mental/emotional balance.