🇺🇸 United States · Memory Foam vs Hybrid (coils and foam)

Siena Memory FoamvsBeautyrest Harmony Lux Carbon

Which one is best for you? Siena Memory Foam vs Beautyrest Harmony Lux Carbon - 2026 comparison by Vs Mattress

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Siena Memory Foam$300 OffBeautyrest Harmony Lux CarbonCheck current deal.
Siena Memory Foam logoSiena Memory Foam

Siena Memory Foam

by Siena · Memory Foam

$300 Off

10 years · 180-night trial

Beautyrest Harmony Lux Carbon logoBeautyrest Harmony Lux Carbon

Beautyrest Harmony Lux Carbon

by Beautyrest · Hybrid (coils and foam)

Check current deal.

10 years · 100-night trial

Pricing by size

Siena Memory Foam

Twin$499
Twin XL$599
Full (Double)$649
Queen$699
King$799
California King$799

Beautyrest Harmony Lux Carbon

Twin$1,399
Twin XL$1,449
Full (Double)$1,519
Queen$1,599
King$2,099
California King$2,099

Essential information

Siena Memory FoamBeautyrest Harmony Lux Carbon
TypeMemory FoamHybrid (coils and foam)
Launched–1925
BrandSienaBeautyrest
Made in–United States
Unique points

The Siena memory foam mattress has five layers of pure comfort:

  • Soft and Comfy Cover
  • Responsive Memory Foam
  • Body Supporting Layer
  • Foundational Foam
  • Shift-Resistant Lower Cover

The Beautyrest Harmony Lux Carbon Series is a five layer design (prices and information based on the Medium Classic Top):

  • 0.5" Plush Comfort Foam
  • 1" Medium Comfort Foam
  • 1.5" Energy Foam
  • 0.5" Beautyrest® Gel Memory Foam
  • T2 Pocketed Coil® Technology with BeautyEdge®.

The Extra Firm Classic Top is available at a cheaper price.

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Certifications & trial

Siena Memory FoamBeautyrest Harmony Lux Carbon
OEKO-TEX®NoNo
CertiPUR-US®YesYes
CertificationsCertiPur-US®CertiPur-US®
Other certification info––
Sleep trial180 nights100 nights
Warranty10 years10 years
Free shipping––
Free returnsYesYes
Pay laterYesYes
Delivery info

FREE SHIPPING, Within 2 - 5 Business Days With No Contact Delivery

Conveniently delivered using our complimentary White Glove Delivery experience. After checkout, you'll be contacted by our shipping partner to select a delivery day that works best for your schedule. The day of your delivery, you'll get a call confirming your delivery window. Upon delivery, they will set up your new mattress and remove your old mattress and any packaging for that mattress.

Firmness & feel

Siena Memory FoamBeautyrest Harmony Lux Carbon
One firmness fits allNoNo
Select your firmnessNoYes
Adjustable firmnessNoNo
Half and half firmnessNoNo
Flippable / reversibleNoNo
Firmness info–

The Harmony Lux Carbon Series has 5 firmness options: Classic Top (available in Extra Firm, Medium and Plush) and Pillow Top (available in Medium and Plush). The Classic Top is a firmer top for traditional support, the Plush Top is a plush, soft top for extra comfort. There is an extra $400 cost associated with the Plush Top options.

Construction & materials

Siena Memory FoamBeautyrest Harmony Lux Carbon
LayersResponsive Memory Foam, Body Supporting Layer, Foundational FoamPlush Comfort Foam, Medium Comfort Foam, Energy Foam, Beautyrest® Gel Memory Foam, T2 Pocketed Coil® Technology with BeautyEdge®
CoverSoft and Comfy Cover: Soft to touch and breathable to keep you cool and comfortable.Seaqual Fabric Technology utilizes recovered plastics from the ocean to create a durable and luxurious fabric.
Machine-washable coverNoNo
Ergonomic handlesNoYes
ComfortSiena means comfort. Comfort that helps you forget about the worries of the day. Comfort that tells your body, “relax, it’s time to recharge”. Comfort that helps you enjoy a long, deep, and soul nourishing sleep.Featuring our RightTemp™ Wave Foam, our Harmony Lux™ Carbon Series sleeps cool and comfortable all night. Consistently cool and comfortable. InfiniCool™ Lux is a system of layers in the cover and right below the cover that are cool-to-the-touch.
SupportSome people love super soft mattresses. Some people love a rock hard one. Most people are somewhere in the middle. That’s why the Siena is a medium firm mattress, comfortable to sleep on, but also firm enough to correctly support your body.Beautyrest® Harmony Lux™ Carbon Series features our latest innovations in support, comfort, and cooling that work together in harmony for a better night's sleep. Its new and innovative coil design and support system, advanced pressure relieving foams, uniquely engineered cooling technologies and exclusive sustainable fabric technology makes this collection the ultimate choice in premium bedding. BeautyEdge® for reliable edge support. Our Precision Support System™ powered by T2 Pocketed Coil™ Technology provides additional support where you need it most. Beautyrest® Gel Memory Foam and RightTemp™ Wave Foam work together to create incredible pressure relief.
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Size & weight

Siena Memory FoamBeautyrest Harmony Lux Carbon
Available sizesTwin, Twin XL, Full (Double), Queen, King, California KingTwin, Twin XL, Full (Double), Queen, King, California King
DimensionsTwin: 10 "Twin: 14.75 "
Twin weight (kg)4257
Twin XL weight (kg)4559
Full (Double) weight (kg)5978
Queen weight (kg)6899
King weight (kg)85129
California King weight (kg)85134

FAQs

Siena Memory Foam

What are Siena mattresses made of?

The Siena Memory Foam Mattress is made with a tri-layer design that includes gel-infused memory foam and two different types of polyfoam. The foam used in the mattress is CertiPUR-US certified, meaning it's free from harmful chemicals and additives.

Can you flip the Siena mattress?

The Siena mattress is not designed to be flipped. It has a high-density base foam layer at the bottom, and flipping it would compromise its pressure-relieving properties.

How long will the Siena mattress last?

The Siena mattress, being a budget mattress, is not made with as many high-quality materials and is therefore expected to last about five years. This is approximately half the lifespan of a typical mattress.

Beautyrest Harmony Lux Carbon

How many coils does Harmony Lux have?

The Beautyrest Harmony Lux models all feature the same pocketed coil support unit, which includes 850 coils (in the queen size) and provides zoned support.

What is the Seaqual Fabric Technology?

Seaqual is a collaborative initiative aimed at cleaning our oceans and raising awareness about marine litter. They convert ocean plastics into luxurious, high-quality sustainable fabrics. These fabrics not only feel great but also contribute to cleaner oceans. Each queen-size mattress made using Seaqual fabric helps to eliminate the equivalent of up to 50 water bottles from the ocean.

How do I know which firmness to select when I am mattress shopping?

The choice of mattress firmness is subjective and depends on your personal preferences and problem areas. Stomach sleepers generally benefit from a firmer mattress, while back sleepers find comfort in a firm to medium feel. Side sleepers often prefer a medium or plush mattress with extra pressure relief. These guidelines can assist in narrowing down options, but personalized recommendations based on individual needs can be obtained from the Customer Support team.

Wrap up

Thank you for checking out this Siena Memory Foam vs Beautyrest Harmony Lux Carbon mattress comparison. We have tried to compare all the necessary information to help you choose which mattress is the most suitable for you.

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