The MLILY Harmony Chill 3.0 Mattress excels at isolating motion. Its foam comfort layers and polyfoam support core absorb movement, helping the mattress remain still and silent when sleepers get in and out of bed or change positions. Those who sleep with a partner should not be disturbed by their partner’s movements during the night.
In general, memory foam absorbs motion well. The Harmony Chill 3.0’s all-foam construction and medium (5) firmness help it stand out.
When you buy through our links, we may earn a commission. Products or services may be offered by an affiliated entity. Learn more.
MLILY Harmony Chill 3.0 Mattress Review: Our Ratings
Senior Product Editor
Methodology
Up-to-Date
Overall Rating
8.2
$3,499 from MLILY (queen)
Price Range: $2,299 – $2,990
Mattress Type: Foam
Firmness Options: Medium (5)
At a Glance
MLILY’s Harmony Chill 3.0 is an all-foam mattress with above-average temperature control compared to similarly constructed models. Other major strengths include excellent motion isolation and consistent pressure relief.
Ratings Summary
Motion Isolation
8.5/10
Edge Support
6.5/10
Temperature Control
6.5/10
Ease of Movement
5.5/10
Off Gassing
6/10
Pressure Relief
8/10
Pros
-
Features a breathable cover and speciality designed foams to improve temperature regulation
-
Exceptional motion isolation will ensure you’re less likely to wake your bed partner if you move at night
-
Medium firmness, which will appeal to most sleepers
Cons
-
May be too soft for stomach sleepers, especially those over 130 pounds
-
Weak edge support may diminish usable sleep surface
-
High price-point for a foam mattress
Table of Contents
MLILY was founded in 2003 with a focus on creating foam mattresses that sleep cool. MLILY products are currently available in more than 72 countries. MLILY USA has its headquarters in Tennessee, with the factory based in South Carolina.
Among the many mattresses offered by MLILY is the Harmony Chill 3.0, a five-layer foam mattress with a 13-inch profile. The mattress incorporates a breathable cover, phase change material, and multiple specialty foams designed to improve temperature regulation. In terms of firmness the mattress is medium, or 5 out of 10.
The Harmony Chill 3.0 Mattress is one of three models in the Harmony collection. The Harmony+ is similar to the Harmony Chill 3.0 but with fewer layers. The Harmony Chill 2.0 is similar to the Harmony Chill 3.0 model, but it’s designed to be slightly firmer.
We’ll discuss the pricing, materials, construction, and performance of the MLILY Harmony Chill 3.0 Mattress. We’ll also cover how this bed performs for sleepers of different body types and preferred sleep positions, so you can determine whether it’s the best mattress for your 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
MLILY Harmony Chill Mattress
Sleeper Type
Side Sleepers
Back Sleepers
Stomach Sleepers
Side Sleepers
The MLILY Harmony Chill 3.0 Mattress is a strong choice for side sleepers, especially those who weigh less than 130 pounds. The memory foam and plush polyfoam layers help cushion the shoulders and hips, and they offer contouring to help promote spinal alignment.
The Harmony Chill 3.0’s medium (5) firmness is particularly suitable for side sleepers under 130 pounds, who benefit from cushioning pressure relief. The best mattresses for heavy sleepers are generally quite firm. Side sleepers who weigh more than 130 pounds could use a slightly firmer surface to maintain spinal alignment, though these sleepers should feel fairly comfortable on the mattress as well.
Back Sleepers
Back sleepers under 130 pounds receive excellent support from the MLILY Harmony Chill 3.0 Mattress, which contours to the shape of the back for optimal spinal alignment. This mattress also offers decent support for back sleepers between 130 and 230 pounds.
Back sleepers over 230 pounds may need to find a firmer mattress. For these sleepers, the plush foams allow the midsection to sink in further, which can push the spine out of alignment and cause soreness and pain.
Stomach Sleepers
Stomach sleepers tend to need a firmer mattress for consistent spinal support. For stomach sleepers over 130 pounds, the Harmony Chill 3.0 may be too soft. These sleepers may find their abdomen sinks into the mattress, which can lead to back pain.
The MLILY Harmony Chill 3.0 Mattress delivers sufficient support for stomach sleepers under 130 pounds, who don’t sink as far into the mattress.
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 Foam Beds You Might Like
Bear Original
Overall Rating:
7.6 /10
Price Range:
$511 – $1,099
Mattress Type:
Foam
Firmness Options:
Firm (7)
Nolah Signature 12
Overall Rating:
8.1 /10
Price Range:
$844 – $1,819
Mattress Type:
Foam
Firmness Options:
Medium (5)
Nectar Classic
Overall Rating:
8.3 /10
Price Range:
$349 – $1,098
Mattress Type:
Foam
Firmness Options:
Medium Firm (6)
MLILY Harmony Chill 3.0 Mattress Review Breakdown
The MLILY Harmony Chill 3.0 Mattress includes four layers of foam in the comfort layer and one layer of foam in the support core. A breathable knit cover encases the mattress.
The top layer is made of perforated polyfoam with phase change material (PCM). This material is designed to maintain a neutral temperature by absorbing and releasing body heat as needed.
The next layer of the mattress is made with memory foam, featuring bamboo charcoal infusions engineered to absorb moisture and heat. Memory foam also contours closely to help relieve pressure points.
A third layer of gel-infused polyfoam is intended to draw heat away from the surface of the mattress. The fourth comfort layer is made of convoluted polyfoam, sometimes referred to as egg crate polyfoam. The ridged texture of this foam is designed to increase airflow.
The final layer of the Harmony Chill 3.0 Mattress is a polyfoam support core. This layer gives the bed a sturdy and consistent base. The 13-inch profile is slightly higher than normal but still within the average range. It has a medium (5) firmness.
|
Firmness |
Medium – 5 |
|---|---|
|
Mattress Type |
Foam |
|
Construction |
The MLILY Harmony Chill 3.0 Mattress includes four foam comfort layers and a polyfoam support core. Cover Material:Knit Cover Comfort Layer:
Perforated Polyfoam with Phase Change Material
Support Core:Polyfoam |
MLILY Harmony Chill 3.0 Mattress Sizes
The MLILY Harmony Chill 3.0 is available in all six standard mattress sizes. Due to its 14-inch profile, the mattress may require a deep-pocket fitted sheet.
Trial, Warranty, and Shipping Policies
Availability
The MLILY Harmony Chill 3.0 is available online through the MLILY website and on Amazon. MLILY products are also sold in brick-and-mortar stores across the U.S. Customers can use the Store Locator function on the MLILY website to find a local retailer.
Shipping
Products ship via FedEx Ground and generally take 4 to 7 business days to arrive. Customers pay all shipping costs. The MLILY Harmony Chill 3.0 Mattress arrives compressed and vacuum sealed in a box. Customers can unpack the mattress by carefully removing the packaging and letting the mattress decompress. MLILY recommends allowing 24 hours for the mattress to air out and expand before use.
Additional Services
MLILY does not offer White Glove delivery or old mattress removal.
Sleep Trial
MLILY does not provide a sleep trial for the Harmony Chill 3.0. All sales of the mattress are final.
Warranty
The MLILY Harmony Chill 3.0 Mattress is backed by a 10-year nonprorated warranty. The warranty covers defects in craftsmanship and materials, excluding comfort preferences. Customers can initiate a warranty claim on the MLILY website. Only mattresses ordered directly from MLILY or an authorized MLILY retailer are eligible for warranty coverage.
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.
Danny is a Certified Sleep Science Coach with an in-depth knowledge of sleep health. He has tested hundreds of mattresses and sleep products.