• ONYX Hybrid Firm - Sleep City
1 7

MLILY

ONYX Hybrid Firm

ONYX Hybrid Firm

$1,799.00 USD
$1,799.00 USD
Sale Sold out
Shipping calculated at checkout.

Graphene cooling technology and copper infusion for temperature regulation and pocketed springs for flex support.

The Onyx is sleeker, thinner, and firmer than the other two models in the Onyx lineup. It has a Cooling Knit Cover and utilizes the paring of Copper Gel AeroFusion™ Memory Foam and Flex Support Foam to provide the sleeper with support, isolate them from motion, and align their pressure more evenly.

120 Night Sleep Trial + 15-Year Warranty

  • 12" height
  • Firm feel
  • Hybrid
  • Graphene-enhanced cooling technology
  • Regulates temperature and moisture
  • Flex support with pocketed springs

Layers


Graphene-enhanced Cooling Knit Fabric Cover

Infused with graphene, the cooling knit fabric not only breathes, but the air flow creates a cooling sensation keeping you comfortable while you sleep. This highly advanced fabric stays cool-to-the-touch due to its superior breathability and temperature regulating properties that move heat away from the body.

Copper Gel AeroFusion™ Memory Foam

The compressed copper and gel particles are infused into the AeroFusion Memory Foam®, forming a soft and antimicrobial film close to the human skin. It can regulate moisture and reduce odor, thus reducing the risk of skin diseases and ensuring a clean and comfortable sleep environment.

Flex Comfort Foam

This foam is often used as part of our base support top layer to seal in our Individually Pocketed Spring system in our Hybrid lines. This foam is flexible and durable, allowing for the other more specialized foams above it to shine while it supports from below.

Pocketed Spring With Foam Encasement

We manufacture our own springs to ensure that the quality matches the foam that surrounds them. The specially crafted pocketed coil system enables the mattresses to be rolled and compressed for convenient shipping. Moreover, our pocketed coils are unparalleled in their ability to provide support and adaptability, allowing the sleeper to relax and rejuvenate.

Flex Support Foam

Flex Support Foam is often the bottom layer of our mattresses. A mattress needs to provide the support needed to keep the spine aligned so the sleeper’s muscles relax instead of tightening to compensate. This high-grade foam completes the bottom of the mattress to provide long-lasting durability and support of the top layers.

Materials & Certifications

  • CertiPUR-US
  • OEKO-TEX
View full details

Don't Forget Your Adjustable Base

1 10
  • Purple RejuvenatePlus™ Mattress - Sleep City

    120 Night Sleep Trial

    If you are not satisfied with the comfort of your mattress within 120 nights of your purchase, we will do whatever we can to make sure you are sleeping well.

  • Purple SoftStretch Sheet Set - Sleep City

    Extended Warranty

    We stand by the products that we carry. On top of the manufacturer's warranty, Sleep City adds an additional five year warranty at no cost to you.

  • TEMPUR-Ergo® Smart Base - Sleep City

    White Glove Delivery

    Leave the heavy lifting to our highly rated professional delivery team!

    We will even haul off your old mattress for you if needed.

1 3
Call or Text Us

Your Sleep Style Matters

  • Stomach Sleepers Essentials - Sleep City

    Stomach Sleepers Essentials

    Sleep City

    Choosing the right mattress for stomach sleepers is essential for maintaining proper spinal alignment and avoiding discomfort. Here's a guide to help you find the best mattress for stomach sleeping:...

    Stomach Sleepers Essentials

    Sleep City

    Choosing the right mattress for stomach sleepers is essential for maintaining proper spinal alignment and avoiding discomfort. Here's a guide to help you find the best mattress for stomach sleeping:...

  • Bedtime Bliss for Back Sleepers - Sleep City

    Bedtime Bliss for Back Sleepers

    Sleep City

    Let us help you find the right mattress as a back sleeper. It's crucial for ensuring proper spinal alignment and a restful night's sleep.

    Bedtime Bliss for Back Sleepers

    Sleep City

    Let us help you find the right mattress as a back sleeper. It's crucial for ensuring proper spinal alignment and a restful night's sleep.

  • Sleeping Soundly as a Side Sleeper - Sleep City

    Sleeping Soundly as a Side Sleeper

    Sleep City

    Finding the right mattress for side sleepers involves considering several factors to ensure comfort and support. Here are some tips to help pair you with your perfect mattress!

    Sleeping Soundly as a Side Sleeper

    Sleep City

    Finding the right mattress for side sleepers involves considering several factors to ensure comfort and support. Here are some tips to help pair you with your perfect mattress!

  • Memory Foam vs. Hybrid: Choosing the Right Option for You - Sleep City

    Memory Foam vs. Hybrid: Choosing the Right Opti...

    Sleep City

    Let's dive into the characteristics of memory foam and hybrid mattresses to help you make an informed decision!

    Memory Foam vs. Hybrid: Choosing the Right Opti...

    Sleep City

    Let's dive into the characteristics of memory foam and hybrid mattresses to help you make an informed decision!

1 4