Simmons Beautyrest World Class Level Three 14.75" Plush Mattress in a modern, luxury bedroom setting.

Simmons Beautyrest World Class Level 3 14.75 Inch Plush Mattress with contouring comfort for side sleepers.

Close-up of Beautyrest World Class plush mattress texture, providing responsive comfort for side sleepers.

Simmons Beautyrest World Class 14.75" Plush Mattress and matching foundation for a complete sleep system.

Internal layers of a Beautyrest World Class mattress with plush comfort, pocketed coils, and a cooling surface.

Simmons Beautyrest World Class Level Three Plush 14.75 Inch Mattress

Plush Medium Firm Pillow top Memory foam Hybrid

Simmons Beautyrest World Class Level Three Plush 14.75 Inch Mattress

$1,399.00

$1,699.00

Save $300.00

Brand:

beautyrest

i Size Guide

$1,399.00

Only 18 left in stock

Free USA Wide Delivery

10 Year Warranty

Advanced Technology

The Simmons Beautyrest World Class Level Three Plush Mattress brings together premium triple-strand coil support, advanced cooling foams, and sustainable luxury fabric in a plush 14.75-inch hybrid build.

Cloudy Mattress is an Authorized Simmons Beautyrest retailer, so every purchase is backed by the full manufacturer's warranty. The feel sits on the plush side of the comfort scale, delivering the cushioned cradling that side and back sleepers often seek.

Because of this cushioned response, it ranks among the best 15-inch plush mattresses for side sleepers, offering options for pressure relief at the hips and shoulders.

Inside, multiple engineered components work together, starting with an InfiniCool Lux cooling cover that delivers cool-to-the-touch surface comfort.

This Beautyrest Harmony Lux Diamond Plush uses InfiniCool Lux cooling technology with two layers of active cooling, helping you fall asleep faster on warm nights. Furthermore, the cover features Seaqual Sustainable Fabric, transforming recovered ocean plastics into high-quality upcycled fibers for an eco-friendly, sustainable sleep surface.

Beneath the cooling cover, Micro Diamond Memory Foam is infused with actual diamond particles engineered to conduct heat away from the body. This premium foam layer pairs with SurfaceTouch Gel Memory Foam at the quilted surface for targeted lumbar pressure relief from the moment you lie down.

Additional plush comfort foams cradle the body, delivering cloud-like luxury comfort ideal for side sleepers who need extra cushioning. The mattress also features Beautyrest's premium T3 Pocketed Coil Technology, the brand's premier triple-strand coil support design.

This premium coil system delivers Beautyrest's highest level of individualized support and helps keep the spine in healthy alignment under the plush surface. Furthermore, the pocketed construction provides zero motion transfer for couples, making this an excellent luxury soft pocketed coil mattress for sharing the bed.

RightTemp Memory Foam with highly conductive carbon fibers adds a consistent, supportive feel and additional cooling beneath the comfort layers. A high-density base foam anchors the build, delivering edge-to-edge stability and a lasting restorative deep sleep experience for years to come.

At a generous 14.75-inch profile, this 14.75 inch soft luxury mattress is fully adjustable-base compatible and pairs beautifully with modern foundations.

Additionally, the mattress is made in the USA, built with non-toxic certified sleep materials, and backed by a 10-year limited manufacturer warranty.

Financing through Affirm is also available at checkout for added flexibility.

Plush Cloud-Like Comfort

Plush comfort foams paired with SurfaceTouch and Micro Diamond Memory Foam deliver cloud-like luxury comfort ideal for side and back sleepers.

T3 Triple-Strand Pocketed Coils

Beautyrest's premier T3 Pocketed Coil Technology delivers triple-strand coil support for the brand's highest level of individualized support.

Diamond-Infused Cooling Foam

Micro Diamond Memory Foam is infused with diamond particles engineered to conduct heat away from the body for cooler rest.

Two-Layer Active Cooling InfiniCool

Lux cooling technology provides two layers of active cooling with a cool-to-the-touch sleep surface for hot sleepers.

Targeted Pressure Relief

Multiple premium comfort foams cradle hips and shoulders for targeted lumbar pressure relief during the night.

Sustainable Ocean-Recovered Fabric

Seaqual Sustainable Fabric transforms recovered ocean plastics into a luxurious cover for an eco-friendly, sustainable sleep surface.

Zero Motion Transfer

Pocketed coils absorb energy to deliver zero motion transfer for couples, so partner movement is far less noticeable.

Key Mattress Benefits

7 Layers
Of Cooling
Comfort

The exterior cover features two layers of active cooling technology with a cool-to-the-touch surface. The Seaqual Sustainable Fabric is woven from recycled ocean plastics, supporting both a luxury feel and environmental responsibility.

This top comfort layer is located directly within the quilted sleep surface to deliver immediate pressure relief. As a result, sleepers feel advanced pressure point relief the moment they lie down, with cooling gel that helps regulate temperature.

This premium layer is infused with actual diamond particles engineered to conduct heat away from the body. Furthermore, the conductive diamond infusion supports a cooler sleep surface throughout the night.

Additional plush memory foam layers cradle the body's curves, delivering the soft, cushioned feel that defines this Plush model. These layers provide the cloud-like luxury comfort ideal for side sleepers.

This layer features ultra-strong, highly conductive carbon fibers for a consistently supportive feel and cool sleep. Furthermore, the construction adds airflow through this critical mid-mattress layer.

The premium T3 Pocketed Coil Technology features triple-strand wire construction for Beautyrest's highest level of individualized support. Furthermore, the pocketed design reduces motion transfer between partners for undisturbed rest.

This high-density base foam anchors the entire mattress build and reinforces the no-flip design. It helps maintain consistent shape, performance, and stability for years of dependable use.

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The 14.75-inch depth made this mattress the right choice for our height

My husband and I are both tall — he is 6'4" and I am 5'11". A lower-profile mattress always felt proportionally wrong in our bedroom. The Simmons World Class Level Three Plush at 14.75 inches is the first mattress that looks and feels correctly proportioned for our bedroom and for us. And the sleep quality is exceptional. The plush comfort layers and Level Three coil support are exactly right for our combination of needs.

Edge support rivals center quality — rare in a plush mattress

Plush mattresses typically have inferior edge support because the comfort layers compress at the perimeter. The Simmons World Class Level Three Plush has noticeably better edge support than any other plush mattress I've owned or tested. The perimeter is reinforced effectively and sleeping near the edge does not produce the roll-off sensation I've experienced on competitors. We use the full surface of our mattress and strong edge support is non-negotiable — the Level Three Plush delivers it.

Senior — high profile and deep plush improved my daily life

At 81 with severe osteoarthritis in both hips my sleep quality had been declining for years. My geriatric physician recommended a high-profile mattress for easier egress and a deep plush surface for hip joint cushioning. The Simmons World Class Level Three Plush at 14.75 inches meets both requirements exactly. I sleep longer, wake with less hip pain, and get in and out of bed with significantly less difficulty. This mattress has improved my daily quality of life in a meaningful way.

Nine months — plush surface holds at Level Three quality

I specifically waited nine months to post this review because plush mattresses have a longevity problem — they feel wonderful initially and compress into mediocrity. Not the Level Three. At nine months the plush feel of the Simmons Beautyrest World Class Level Three is genuinely preserved. The comfort layers have settled slightly but the cushioning quality is fully intact. The Level Three coil system is unchanged. Nine months and I have no concerns about the long-term.

Rental property upgrade — guest reviews improved immediately

We own a beach house rental and upgraded the primary bedroom from a budget mattress to the Simmons Beautyrest World Class Level Three Plush. The first five guest reviews after installation all mentioned the bed positively. Our average guest star rating increased by half a point in the first season. A quality mattress is the single highest-impact upgrade in a short-term rental and the World Class Level Three is the right investment at this level.

HAVE QUESTIONS?

WE'VE GOT ANSWERS

Designed for deep comfort and better rest, so you wake up refreshed and ready for the day

Yes, the World Class Level 3 Plush is an excellent choice for side sleepers. The plush comfort foams combined with SurfaceTouch and Micro Diamond Memory Foam cradle the shoulders and hips where side sleepers need the most cushioning, while the premium T3 pocketed coil core keeps the spine in healthy alignment.

Level 3 represents Beautyrest's premium World Class tier and builds on Level 2 with several key upgrades. Most notably, Level 3 features T3 triple-strand pocketed coil technology versus T2 dual-strand coils, plus Micro Diamond Memory Foam infused with actual diamond particles for enhanced cooling. The cooling system, foam quality, and overall durability are all upgraded at Level 3 compared to Level 2.

A 14.75-inch mattress generally pairs best with deep-pocket or extra-deep-pocket fitted sheets. Standard fitted sheets are typically designed for mattresses up to about 12 inches deep, so deeper pockets help ensure a secure, wrinkle-free fit on this taller profile.

Beautyrest mattresses require proper support to maintain the warranty. The mattress can be placed on a Beautyrest foundation, an adjustable base, or a platform bed with proper slat support. Cloudy Mattress also offers an optional box spring with a metal foundation as an add-on at checkout.

Yes, despite being woven from recycled ocean plastics, the Seaqual fabric is engineered to feel as luxurious and soft as traditional premium mattress fabrics. The recovered plastics are transformed into high-quality upcycled fibers that deliver both a comfortable hand feel and breathable performance.

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