0 ratings
Item #:
140409280
Siena 14 Signature Hybrid Twin Mattress & Bonus Pillow Medium Firm - Memory Foam & Innerspring System 180-Night Trial Pressure-Relief Mattress in a
1 Sustainability Highlights
Item #:
140409280
TZS 1552381
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
In stock
Imported from USA store
QTY:
Only 10 items left in stock.
Order now and get it around Wednesday, September 02
Secured transaction
Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.
Our Top Logistics Partners
Siena doesn’t compromise on comfort, striking the ideal balance between comfort and support for a restful night's sleep.
Fast
Shipping
Free
Return*
Secure Packaging
100% Original Products
PCI DSS Compliance
ISO 27001 Certified
Note: Step Down Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.
What Stands Out
Pressure Relief
Designed with premium pressure-relieving layers, the Siena mattress alleviates pressure points, ensuring a restful night's sleep and reducing discomfort for all sleep positions.
Trial Period
Enjoy a 180-night trial period, allowing users to experience the Siena mattress risk-free, ensuring satisfaction before commitment. Ideal for those uncertain about their mattress preferences.
CertiPUR-US Certified
Made with CertiPUR-US certified foam, this mattress guarantees safety and sustainability, providing a healthier sleep environment free from harmful chemicals for peace of mind.
Product Details
- GEL MEMORY FOAM MEETS SPRINGS - Siena Hybrid combines 2 inches of CertiPUR-US Certified gel memory foam and 3 inches of dualaction foam with innerspring coils for contouring support and boosted breathability.
- DEDICATED EXTRA COMFORT LAYER - Our 12" and 14" Signature mattresses include an extra layer of comfort that makes the Signautre's memory foam even more effective
- SAFE & FIBERGLASS FREE - Your Siena mattress is made without ozone depletors, mercury, lead, formaldehyde, phthalates and other harmful substances that can be in consumer products
- 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.
- EXTRA PILLOW - Memory foam, pressure relieving Siena pillow with soft, breathable comfort included with all 14" Signature mattresses!
| Additional Features | Breathable, Lightweight, Low Motion Transfer, Orthopedic, Pressure Relief |
| Brand Name | Siena |
| Included Components | Mattress |
| Age Range Description | Child |
| Manufacturer | Siena |
| UPC | 810167464887 |
| Set Name | Single |
| Model Number | snhyfrtnbz-s:twin |
| Manufacturer Part Number | snhyfrtnbz-s:twin |
| Unit Count | 1.0 Count |
| Item Type Name | Bed Mattress Conventional |
| Style Name | 14" Signature |
| Color | Grey |
| Material Type | Memory Foam |
| Product Care Instructions | Hand Wash Only |
| Size | Twin |
| Item Weight | 51 Pounds (23.13 kg) |
| Item Dimensions | 75 x 38 x 14 inches (190.5 x 96.5 x 35.6 cm) |
| Item Depth | 14 inches (35.6 cm) |
| Weight Capacity Maximum | 500 Pounds (226.8 kg) |
| Maximum Weight Recommendation | 500 Pounds (226.8 kg) |
| Required Assembly | No |
| Assembly Instructions Description | Unbox, unroll, and wait for 24 hours |
| Style | 14" Signature |
| Special Feature | Breathable, Lightweight, Low Motion Transfer, Orthopedic, Pressure Relief |
| Brand | Siena |
Who Should Buy?
-
Side Sleepers
The medium-firm design provides excellent contouring for side sleepers, relieving pressure on hips and shoulders effectively.
-
Couples
Couples can benefit from motion isolation features, minimizing disturbances from partner movements throughout the night.
-
Allergy Sufferers
CertiPUR-US certification means it's made without harmful chemicals, ideal for those sensitive to allergens and toxins.
-
Stomach Sleepers
Stomach sleepers may find the medium-firm level insufficiently supportive for spinal alignment, increasing the risk of discomfort.
Product Description
Sustainability Highlights
This product has sustainability features recognized by trusted certifications.
Safer chemicals
Made with chemicals safer for human health and the environment. As certified by
OEKO-TEX® STANDARD 100 certified products require every component of a textiles production including all thread, buttons, and trims to be tested against a list of more than 1,000 regulated and unregulated chemicals which may be harmful to human health. The assessment process is globally standardised, independently conducted, and updated at least once per year based on new scientific information or regulatory requirements. Learn more about this certification
- Certification Number
- SHKO 064515
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What is the construction of the Siena 10” Twin Gel Memory Foam Mattress?
Answer: The Siena 10” Twin Gel Memory Foam Mattress features multiple layers, including a top layer of gel-infused memory foam that aids in temperature regulation while providing excellent pressure relief. Beneath this is a supportive medium-firm foam layer that balances comfort and support. The combination of these layers ensures you receive the right support for your spine and pressure points, making it ideal for back and stomach sleepers who may experience discomfort on softer surfaces. -
Question:
What does CertiPUR-US® certified mean?
Answer: CertiPUR-US® certification indicates that the foam used in the Siena mattress is made without harmful chemicals and meets rigorous performance standards. This certification ensures that the mattress is free from ozone depleters, heavy metals, formaldehyde, and other harmful substances, promoting a healthier sleep environment. This is particularly important for those with allergies or sensitivities, providing peace of mind while enjoying the comfort of the mattress. -
Question:
How does the 180 Night Trial work for the Siena mattress?
Answer: The 180 Night Trial allows you to try the Siena mattress in your own home for a substantial period. If it doesn't meet your expectations for comfort or support, you can initiate a return. This trial period is designed to give you ample time to adjust to the mattress's feel and determine if it's the right fit for your sleeping style, ensuring you make a fully informed purchase. -
Question:
Is the Siena mattress suitable for side sleepers?
Answer: Yes, the Siena mattress is suitable for side sleepers due to its medium-firm feel and pressure-relieving memory foam layers. The gel-infused memory foam contours to the body, providing ample cushioning for the shoulders and hips, which are typically pressure points for side sleepers. This support helps maintain proper spinal alignment, leading to a more restful night’s sleep. -
Question:
How does gel-infused memory foam improve sleep quality?
Answer: Gel-infused memory foam enhances sleep quality by regulating temperature and providing tailored support for your body. The cooling properties of gel help dissipate heat, preventing the uncomfortable overheating that can occur with traditional memory foam. This means you can enjoy the conforming comfort of memory foam without the added warmth, making it a great choice for those who sleep hot. -
Question:
Can I use the Siena mattress on any bed frame?
Answer: Yes, the Siena mattress is versatile and can be used on various bed frames, including slatted, platform, and adjustable bases. It’s important to ensure that the frame provides adequate support to prevent sagging and maintain the longevity of the mattress. This flexibility gives you the freedom to choose the look and style of your bedroom while still enjoying the benefits of the Siena mattress. -
Question:
How long does it take for the mattress to expand after unboxing?
Answer: Once unboxed, the Siena mattress typically expands within hours, although it's best to allow up to 48 hours for it to fully regain its shape and start to optimize its performance. This period allows the mattress to acclimate to room temperature and ensures the foam is fully expanded to provide the intended support and comfort. During this time, avoid placing sheets or bedding to allow for proper ventilation. -
Question:
What are the benefits of a medium-firm mattress?
Answer: Medium-firm mattresses like the Siena are designed to provide balanced support and comfort. This firmness level is typically recommended for a variety of sleeping positions, as it offers enough cushioning for pressure relief while maintaining proper spinal alignment. It’s particularly beneficial for combination sleepers who shift positions throughout the night, ensuring consistent comfort regardless of how you sleep. -
Question:
Is the Siena mattress safe for children?
Answer: Absolutely, the Siena mattress is a safe option for children due to its CertiPUR-US® certification, which ensures it is free from harmful chemicals and materials. The medium-firm support is great for growing bodies, providing the necessary support for healthy posture. Its durability also makes it suitable for children's active sleeping habits, offering lasting comfort throughout their development. -
Question:
Where can I buy the Siena 10” Twin Gel Memory Foam Mattress in Tanzania?
Answer: You can purchase the Siena 10” Twin Gel Memory Foam Mattress from Ubuy. Ubuy offers a convenient online shopping experience, allowing you to easily browse and buy the mattress along with additional product details and specifications. With their reliable service, you can confidently find this mattress and explore other bed-related essentials.
Siena Mattresses snhyfrtnbz-s:twin Editorial Review
The 12" Full Gel Memory Foam Mattress has garnered a highly positive reception from customers who appreciate its balance of comfort and support. Many users have noted that the mattress offers a medium-firm feel, which they find suitable for various sleeping positions, especially for side and stomach sleepers. Customers report that the mattress effectively relieves pressure points, contributing to a more restful sleep and alleviating back pain. One user, who initially faced an issue with the mattress not fully expanding, praised the support received from customer service during the return process and was thrilled with the replacement mattress that expanded quickly and provided excellent support. The product's overall comfort has been highly praised, with many users expressing satisfaction for the price point. It's also noted for being adaptable for different users, including toddlers, who seem to enjoy sleeping on it as well. Some reviews highlight the minimal motion transfer characteristic of memory foam, which can make changing positions slightly more challenging but also contributes to reduced disturbances from a partner's movements. Despite some concerns regarding its firmness— with a few users adding a mattress topper for increased comfort—the general sentiment is favorable. The premium pressure-relieving layers and the foam's responsiveness to the body shape are particularly cited as standout features. The mattress has also received appraisal for being CertiPUR-US certified, which assures customers about its safety and lack of harmful chemicals. Overall, this mattress is seen as a solid investment and an excellent alternative to more expensive options like sleep number beds, providing both value and comfort. **
Customer Reviews & Ratings
3 customers ratings
-
5 Star
32%
-
4 Star
34%
-
3 Star
0%
-
2 Star
0%
-
1 Star
34%
Review this product
Share your thoughts with other customers
Pros
- Comfortable medium-firm feel suitable for various sleeping positions
- Excellent pressure relief that alleviates back pain
- Quick expansion after unboxing, especially when following usage instructions
- Affordable pricing relative to quality
- Minimal motion transfer, making it ideal for couples
- CertiPUR-US certified, indicating safety and absence of harmful chemicals
Cons
- Initial firmness may not suit all users without a topper
Platform Trust & Buyer Confidence
MA
Mohammad
Verified buyer
“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”
23 July 2026 · via Trustpilot
CK
Chitra
Verified buyer
“The order and delivery progress was communicated very well. Package arrived within the estimated time. Products arrived as expected in good condition.”
22-Jul-26 · via Trustpilot
K
kund
Verified buyer
“Good supply of products. Safe payment methods, and shipment worldwide! Genuine products.”
23-Jul-26 · via Trustpilot
OO
Onesi
Verified buyer
“Was my first time buying a product from Ubuy, but I found it so helpful. This is reliable. Gonna place a new order!”
22 July 2026 · via Trustpilot
SJ
SAO JOHN
Verified buyer
“Ubuy is a great online platform to buy stuff. Reliable, fast delivery time and great value for money. I've been using Ubuy online shopping platform for three years now and will continue to do so.”
23 July 2026 · via Trustpilot
Secure Checkout
Global Delivery
Easy Returns
Genuine Products
Product Price History
Important information
- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
- Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.
TZS 1552381
Order now and get it around Wednesday, September 02
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
QTY:
Only 10 items left in stock.
Secured transaction
PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.
Our Top Logistics Partners
Fastest cross-border delivery
Features & Benefits
- 5 layers of responsive comfort for optimal spinal alignment.
- Medium-firm feel, perfect for both comfort and support.
- Includes 2 bonus pillows for enhanced sleep experience.
- Easy setup process; expands in just 24 hours.
- CertiPUR-US certified for safety and durability.
- 180-night trial to ensure complete satisfaction.
Ubuy Assurance
Experience worry-free shopping with 100% original products, PCI DSS-compliant payment security, ISO 27001-certified data protection, the fastest cross-border delivery, free returns *, and secure packaging on every order.