🇺🇸 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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Beautyrest Harmony Lux Carbon
by Beautyrest · Hybrid (coils and foam)
Check current deal.10 years · 100-night trial
Pricing by size
Siena Memory Foam
Beautyrest Harmony Lux Carbon
Essential information
| Siena Memory Foam | Beautyrest Harmony Lux Carbon | |
|---|---|---|
| Type | Memory Foam | Hybrid (coils and foam) |
| Launched | – | 1925 |
| Brand | Siena | Beautyrest |
| Made in | – | United States |
| Unique points | The Siena memory foam mattress has five layers of pure comfort:
| The Beautyrest Harmony Lux Carbon Series is a five layer design (prices and information based on the Medium Classic Top):
The Extra Firm Classic Top is available at a cheaper price. |
| Video | – | – |
Certifications & trial
| Siena Memory Foam | Beautyrest Harmony Lux Carbon | |
|---|---|---|
| OEKO-TEX® | No | No |
| CertiPUR-US® | Yes | Yes |
| Certifications | CertiPur-US® | CertiPur-US® |
| Other certification info | – | – |
| Sleep trial | 180 nights | 100 nights |
| Warranty | 10 years | 10 years |
| Free shipping | – | – |
| Free returns | Yes | Yes |
| Pay later | Yes | Yes |
| 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 Foam | Beautyrest Harmony Lux Carbon | |
|---|---|---|
| One firmness fits all | No | No |
| Select your firmness | No | Yes |
| Adjustable firmness | No | No |
| Half and half firmness | No | No |
| Flippable / reversible | No | No |
| 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 Foam | Beautyrest Harmony Lux Carbon | |
|---|---|---|
| Layers | Responsive Memory Foam, Body Supporting Layer, Foundational Foam | Plush Comfort Foam, Medium Comfort Foam, Energy Foam, Beautyrest® Gel Memory Foam, T2 Pocketed Coil® Technology with BeautyEdge® |
| Cover | Soft 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 cover | No | No |
| Ergonomic handles | No | Yes |
| Comfort | Siena 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. |
| Support | Some 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. |
| Posts | – | – |
Size & weight
| Siena Memory Foam | Beautyrest Harmony Lux Carbon | |
|---|---|---|
| Available sizes | Twin, Twin XL, Full (Double), Queen, King, California King | Twin, Twin XL, Full (Double), Queen, King, California King |
| Dimensions | Twin: 10 " | Twin: 14.75 " |
| Twin weight (kg) | 42 | 57 |
| Twin XL weight (kg) | 45 | 59 |
| Full (Double) weight (kg) | 59 | 78 |
| Queen weight (kg) | 68 | 99 |
| King weight (kg) | 85 | 129 |
| California King weight (kg) | 85 | 134 |
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.
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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