๐บ๐ธ United States ยท Memory Foam vs Hybrid (coils and foam)
Siena Memory FoamvsBeautyrest Harmony Lux Diamond
Which one is best for you? Siena Memory Foam vs Beautyrest Harmony Lux Diamond - 2026 comparison by Vs Mattress
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Beautyrest Harmony Lux Diamond
by Beautyrest ยท Hybrid (coils and foam)
Check current deal.10 years ยท 100-night trial
Pricing by size
Siena Memory Foam
Beautyrest Harmony Lux Diamond
Essential information
| Siena Memory Foam | Beautyrest Harmony Lux Diamond | |
|---|---|---|
| Type | Memory Foam | Hybrid (coils and foam) |
| Launched | โ | 1925 |
| Brand | Siena | Beautyrest |
| Made in | โ | United States |
| Unique points | The Siena memory foam mattress has five layers of pure comfort:
| The Beautyrest Harmony Lux Diamond Series is a six layer design (prices and information based on the Medium Classic Top):
|
| Video | โ | โ |
Certifications & trial
| Siena Memory Foam | Beautyrest Harmony Lux Diamond | |
|---|---|---|
| OEKO-TEXยฎ | No | No |
| CertiPUR-USยฎ | Yes | Yes |
| Certifications | CertiPur-USยฎ | CertiPur-USยฎ |
| Other certification info | โ | โ |
| Sleep trial | 180 nights | 100 nights |
| Warranty | 10 years | 10 years |
| Free shipping | โ | โ |
| 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 Diamond | |
|---|---|---|
| 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 | โ | The Harmony Lux Diamond Series has 4 firmness options: Classic Top (available in Medium and Plush) and Pillow Top (available in Medium and Ultra 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 $300 cost associated with the Plush Top options. |
Construction & materials
| Siena Memory Foam | Beautyrest Harmony Lux Diamond | |
|---|---|---|
| Layers | Responsive Memory Foam, Body Supporting Layer, Foundational Foam | InfiniCool Lux, SurfaceTouch, Gel Memory Foam, RightTemp Wave Foam, Firm Comfort Foam, Micro Diamond Memory Foam, MediuM Comfort Foam, T2 Pocketed Coilยฎ Technology. |
| 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, โrelax, itโs time to rechargeโ. Comfort that helps you enjoy a long, deep, and soul nourishing sleep. | Featuring our Micro Diamondย Memory Foam, the Diamond Series is designed to conduct heat away from your body and keep you cool all night long. Consistently cool and comfortable. InfiniCoolย 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. Thatโs why the Siena is a medium firm mattress, comfortable to sleep on, but also firm enough to correctly support your body. | Beautyrestยฎ Harmony Lux Diamond 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. Our Precision Support Systemย powered by T2 Pocketed Coilย Technology provides additional support where you need it most. SurfaceTouchย Gel Memory Foam, Dynamic Responseย Memory Foam, and Micro Diamondย Memory Foam work together to deliver incredible pressure relief. |
| Posts | โ | โ |
Size & weight
| Siena Memory Foam | Beautyrest Harmony Lux Diamond | |
|---|---|---|
| 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 | 62 |
| Twin XL weight (kg) | 45 | 66 |
| Full (Double) weight (kg) | 59 | 87 |
| Queen weight (kg) | 68 | 111 |
| King weight (kg) | 85 | 135 |
| California King weight (kg) | 85 | 142 |
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 Diamond
Do I need to flip or rotate my mattress?
Beautyrest mattresses are designed to be one-sided and do not need to be flipped. However, you can rotate the mattress 180 degrees (from head to foot) if you wish, but this is not a requirement under the warranty guidelines.
How do I clean my mattress?
To clean your mattress, apply baking soda to the soiled area, let it stand for about 15 minutes, then vacuum. Repeat as needed and air out the product as much as possible. Avoid applying liquids as they can stain the fabric and worsen the soiled area. Using a mattress protector is highly recommended to protect your mattress from stains and spills and to prolong its lifespan.
Can I use an adjustable base with my Beautyrest mattress?
All current Beautyrest mattresses are compatible with adjustable bases. The mattresses are tested for compatibility with Beautyrest branded adjustable bases.
Thank you for checking out this Siena Memory Foam vs Beautyrest Harmony Lux Diamond 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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