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Sleep Master 8-Inch Memory Foam Mattress Set with Bi-Fold Boxspring, Twin X-Large

4.4 out of 5 stars 42 customer reviews
| 16 answered questions

Price: $632.00
Sale: $360.09 & FREE Shipping
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Twin XL
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  • Includes twin XL 8" memory foam mattress and twin XL-size 9" Bi-Fold box spring
  • 2" layer of foam ventilated at key pressure points on the body - head & shoulders, hips, feet
  • Bi-fold box spring simply unfolds; no tools required; steel frame provides maximum edge support
  • Limited 5 year warranty for the mattress; Limited 1-year warranty for Bi-Fold box spring
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Unwind and enjoy a good night's sleep with Zinus
Pioneering Comfort See more


Product Description

Size: Twin XL

The quality of your sleep can affect every area of your life, let us help you get your best nights sleep with our 8" memory foam mattress and Bi-Fold box spring twin XL set. The 8-inch Sleep Master memory foam mattress offers comfort and support. The top layer, 2 Inch of our memory foam that is infused with Evergreen and ActivCharcol ingredients. Evergreen is a green tea extract that naturally neutralizes odors from day one, while ActivCharcol is made from purified charcoal that absorbs moisture minimizing odor-causing agents. The next 2" layer is our super soft foam that is ventilated in the areas that hit key pressure points on the body - neck and shoulders, hips and feet. A 4-inch high-density foam base provides the perfect amount of support to ensure that you get a refreshing nights sleep. Sleep Master embraces the idea of "Sleep Green", the comfort of your sleep environment is balanced with ingredients that are safer for you and the environment. We use Bio Foam in all our mattresses, made with natural seed oil this minimizes the use of petrol based chemical oils. Additionally, all of our mattresses are CertiPUR-US certified. You can rest assured knowing that your mattress has gone through the most rigorous and comprehensive testing in the industry. The Bi-Fold box spring was designed for mobility and functionality. Traditional box springs are hard to maneuver through your home and often scrape walls and doors. The Bi-Fold box spring ships in a box and the setup is easy - simply unfold the box spring and lay your mattress on top. A non-skid fabric on top keeps you mattress in place so that you don't have to worry about constantly re-adjusting your mattress. No tools are required for assembly. We strive to help everyone experience a rejuvenating and relaxing night of sleep. The mattress comes with a limited 5-year warranty and the Bi-Fold box spring comes with a limited 1-year warranty.

Product Information

Size:Twin XL
Product Dimensions 76 x 80 x 8 inches
Item Weight 37.8 pounds
Shipping Weight 108 pounds (View shipping rates and policies)
Manufacturer Zinus, Inc
ASIN B007IO12VC
Shipping Advisory This item must be shipped separately from other items in your order. Additional shipping charges will not apply.
Item model number SM-SC-BTCM-8TXL-BF
Customer Reviews
4.4 out of 5 stars 42 customer reviews

4.4 out of 5 stars
Best Sellers Rank #119,329 in Home and Kitchen (See Top 100 in Home and Kitchen)
#2,959 in Home & Kitchen > Furniture > Bedroom Furniture > Mattresses & Box Springs > Mattresses

Warranty & Support

Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

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Customer Questions & Answers

Customer Reviews

Top Customer Reviews

By B. Khlok on October 23, 2013
Size: Full Verified Purchase
I recently moved to a new place and needed to purchase a new bed. Im a plumpy guy and i like comfortable mattresses. I dont have much experience with bed shopping, but i knew it could get pricey. My previous bed was a Full-Size, with box-spring, mattress, and like a 2" mattress topper. That wasnt a bad set-up but i didnt always sleep good. So i told myself the next time i get a foam item, it will be the actual mattress itself that is all foam.

After reading all of these reviews on this Mattress/Box-Spring combo, i was sold. When i first received the boxes, i was surprised how easily the box spring unfolds, and the foam mattress just rolls out. I installed the combo onto the bed frame with no problems.

First Impressions:
When i first laid down on this setup, it was like heaven! I was like "holy ****, im taking a nap right now." Every single time i lay down on this, it just puts a big smile on my face. And i have been loving it more and more everyday. The price is not bad at all either. You just cant beat it. I highly recommend this to anyone looking for a decent setup at a decent price.

5/5 Easily. Love it.
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Size: Twin Verified Purchase
I have edited this review up from a 1 star to a 5 star based solely on the customer service from this company. We were initially worried that what arrived was not what we ordered, but thanks to David, who went above and beyond what he might have done, we are completely satisfied!!!

Be aware that the bed will NOT look like the pictures when it arrives. It will expand into a usable bed :-)

This is a great product, and I will recommend it to anyone!
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By Angel on December 20, 2013
Size: Full Verified Purchase
Came in 2 medium sized boxes and my room mate and I unloaded it by ourselves (we are women hear us roar...lol). Let it sit for the required 48 hours. I was worried it would smell, etc as may of the posted had indicated, but never once was there any odor. It is a firm mattress, so if you are looking for no so firm...this one is not for you.
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Size: Queen Verified Purchase
I was skeptical about buying a bed on Amazon. I was even more skeptical when it arrived (having never had a memory foam mattress before). However, this mattress quickly went from being a guest bed, to becoming our master bed. All of our guests raved about how well they slept on it, we make the switch. Very satisfied.
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Size: Queen Verified Purchase
We bought this bed for our guest bedroom and didn't want to deal with going to a showroom or pay a ton of money. This mattress is perfect! It was shipped right to our front door, came in two boxes that easily fit through all of our doors. Easiest set-up EVER! We have had four sets of guests sleep on the mattress over the past three months and they all said the bed was very comfortable and their backs felt great after such a good nights sleep. I would highly recommend this bed for anyone. We will buy one for our bedroom in a few years when our mattress needs replacing.
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Size: Twin XL Verified Purchase
Excellent mattress at a great value. Other reviews mentioned a lasting smell, but I have not had this problem. You do need to prepare to let the mattress decompress for 3 days before adding linens or using (I gave mine an additional day). Mattress is firm but conforms to body, best sleep in a while! Absolutely no issues whatsoever. Delivery was amazing and I actually received a call from the delivery service asking if I'd like to receive this shipment hours earlier than expected! Great experience and friendly delivery staff. I would recommend this 3 times over!
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Size: Twin Verified Purchase
I bought this set for my college-age son. I was concerned about the quality because the price was so low. I was very pleasantly surprised--the bed is so comfortable! The mattress is soft yet firm. My son loves the mattress set and so does our four cats...:-)
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Size: Queen Verified Purchase
This bed is so comfortable and so worth the price! I bought if for my son's room and he loves it. It came in a bag which made me leery about it, but it rolled out perfectly and we've been happy ever since!
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