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Siena 12 inch Twin XL Memory Foam
9th Feb 2026, 10:14 PM

Siena 12 inch Twin XL Memory Foam Mattress - Medium Firm - 180 Night Trial - Premium Pressure-Relieving Layers - 10 Year Warranty - Mattress in a Box - CertiPUR-US Certified

Price may vary by location, shipping cost, and availability.
17% Off
$249.00
$299.00

Highest: $307.56
Average: $284.94
Lowest: $224.30

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Based our analysis and observation, there is 85.00% chance that the price of Siena 12 inch Twin XL Memory Foam... will increase. Price of product might fluctuate around 3% from current price.*

Price History Graph

Offer Price Prices
Lowest: -
Average: -
Highest: -

Price History Information

You can check the price history of Siena 12 inch Twin XL Memory Foam Mattress - Medium Firm - 180 Night Trial - Premium Pressure-Relieving Layers - 10 Year Warranty - Mattress in a Box - CertiPUR-US Certified here. This product's current Price in USA is $249.00. The average and highest prices are $284.94 and $307.56 respectively.

Lowest Ever Price $224.30
30th Nov 2025
Average Price $284.94
Based on 387 days price tracking
Highest Price $307.56
8th Jun 2025

Price History of All Variants of Siena 12 inch Twin XL Memory Foam...

Current Price in USA

Price $249.00
MRP $299.00
Savings $50.00
Discount 16.72%

Recent Price Drops on Siena 12 inch Twin XL Memory Foam Mattress - Medium Firm - 180 Night Trial - Premium Pressure-Relieving Layers - 10 Year Warranty - Mattress in a Box - CertiPUR-US Certified

Price Drop 8th Feb 2026
$299.00 $249.00
16.72% drop
Price Drop 14th Dec 2025
$295.25 $274.12
7.16% drop
Price Drop 29th Nov 2025
$263.81 $224.30
14.98% drop
Price Drop 23rd Nov 2025
$297.17 $260.13
12.46% drop
Price Drop 15th Nov 2025
$299.00 $239.00
20.07% drop
Price Drop 7th Nov 2025
$284.05 $269.10
5.26% drop
Price Drop 24th Aug 2025
$296.78 $249.00
16.1% drop
Price Drop 28th Jun 2025
$299.00 $249.00
16.72% drop
Price Drop 19th May 2025
$299.00 $278.00
7.02% drop

Product Information

Details

Product Name Siena 12 inch Twin XL Memory Foam Mattress - Medium Firm - 180 Night Trial - Premium Pressure-Relieving Layers - 10 Year Warranty - Mattress in a Box - CertiPUR-US Certified
Store Product Code B0DZJ655MT
Store Name amazon.com
Brand Siena
Rating 9 / 10
Category Mattresses
Product Manufacturer Siena Mattress
Model Number snfmtwlvbz-s:twinxl
Color White
Size Twin XL
Dimensions 80"L x 38"W x 12"H

Features

  • 100% Polyester Blend
  • 180-NIGHT HOME TRIAL & 10 YEAR MANUFACTURER WARRANTY - Rest easy with a Siena mattress. You'll enjoy a 180-night home trial, and we stand by our product if theres any defect or flaw in your Siena in the first 10 years, we'll replace or repair it for free.
  • FIVE LAYERS OF COMFORT - Siena doesnt compromise on comfort. We might cost a lot less than our competitors, but your Siena mattress sure packs a punch when it comes to responsive comfort, supporting proper spinal alignment, and relieving pressure points. With lots of motion-reducing foam, you wont be disturbed if your partner or pet moves.
  • MEDIUM FIRM AND SUPPORTIVE - Finding the perfect firmness is a breeze with Siena. It's medium-firm, striking the ideal balance between comfort and support for a restful night's sleep.
  • SIMPLE TO SET UP - Just move the box to the room you want to use it in, unbox and unroll your mattress, and watch it expand before your eyes. Your Siena will be snooze-ready in 24 hours
  • CertiPUR-US CERTIFIED - Your Siena meets all CertiPUR-US rigorous standards for materials, emissions, product durability and performance. This is an assessment made by independent, accredited testing laboratories. It means your Siena is made without ozone depletors, mercury, lead, formaldehyde, phthalates and other harmful substances that can be in consumer products.

Images

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Image of Siena 12 inch Twin XL Memory Foam Mattress - Medium Firm - 180 Night Trial - Premium Pressure-Relieving Layers - 10 Year Warranty - Mattress in a Box - CertiPUR-US Certified
Image of Siena 12 inch Twin XL Memory Foam Mattress - Medium Firm - 180 Night Trial - Premium Pressure-Relieving Layers - 10 Year Warranty - Mattress in a Box - CertiPUR-US Certified
Image of Siena 12 inch Twin XL Memory Foam Mattress - Medium Firm - 180 Night Trial - Premium Pressure-Relieving Layers - 10 Year Warranty - Mattress in a Box - CertiPUR-US Certified
Image of Siena 12 inch Twin XL Memory Foam Mattress - Medium Firm - 180 Night Trial - Premium Pressure-Relieving Layers - 10 Year Warranty - Mattress in a Box - CertiPUR-US Certified
Image of Siena 12 inch Twin XL Memory Foam Mattress - Medium Firm - 180 Night Trial - Premium Pressure-Relieving Layers - 10 Year Warranty - Mattress in a Box - CertiPUR-US Certified
Image of Siena 12 inch Twin XL Memory Foam Mattress - Medium Firm - 180 Night Trial - Premium Pressure-Relieving Layers - 10 Year Warranty - Mattress in a Box - CertiPUR-US Certified

Rating and Reviews

9 Based on 981 reviews

Siena 12 inch Twin XL Memory Foam has 9 rating out of 10. This average rating is consist of 981 individual ratings. You can rate this product at product review page.

* Predictions is created on based of past prices and trends, it does not guarantee that it will happen. These are just prediction for theoretical information only.