Siena Memory Foam vs Beautyrest Harmony Lux Diamond - 2022 Review

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Siena Memory Foam

Beautyrest Harmony Lux Diamond

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Essential Information

Mattress Type
Memory Foam
Hybrid (coils and foam)
Year Launched
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 Diamond Series is a six layer design (prices and information based on the Medium Classic Top):

  • InfiniCool
  • LuxSurfaceTouch
  • Gel Memory FoamRightTemp
  • Wave FoamFirm Comfort FoamMicro Diamond
  • Memory FoamMediuM Comfort Foam
  • T2 Pocketed Coil® Technology.


Other Certification Info


Twin XL

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Construction & Materials

Siena Memory Foam
Beautyrest Harmony Lux Diamond
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 Coil® Technology.
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.
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 Micro Diamond™ 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. InfiniCool™ Lux is a system of layers in the cover and right below the cover that are cool-to-the-touch.
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 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 System™ powered by T2 Pocketed Coil™ Technology provides additional support where you need it most. SurfaceTouch™ Gel Memory Foam, Dynamic Response™ Memory Foam, and Micro Diamond™ Memory Foam work together to deliver incredible pressure relief.
Manufactured in
United States


Interesting bedtime reading articles

Size & Weight

Weight (Queen)
Available Sizes
Twin, Twin XL, Full (Double), Queen, King, California King
Twin, Twin XL, Full (Double), Queen, King, California King

Trial & Warranty

Free Trial
Sleep Trial
10 years
10 years
Free Shipping
Free Returns


Delivery Information

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.

Related Comparisons

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.