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Zeffly King Size Mattress 12 Inch, Gel Memory Foam Mattress with Individual Pocket Springs, Hybrid Mattress in a Box for Pressure Relief & Cooler Sleep, CertiPUR-US Certified

  • Based on 517 reviews
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Style: 12 Inch


Size: King


Features

  • Sleep Longer, Deeper and CoolerZeffly hybrid mattress combines the supportive, moldable feel of gel memory foam with innersprings for optimal comfort to you. The top layer of Zeffly 12 Inch mattress is made of breathable cotton and sweat-wicking polyester fabric, providing gentle touch to your skin. The gel memory foam layer conforms to your body to relieve pressure as well as a cooler sleep.
  • Less Turn Over, More Deep SleepIf you have a sleeping partner, this pocket coils mattress would be a great investment. The individually wrapped pocketed springs have higher focus on minimizing motion transfer which means that less interference will be caused when you turn around. Feel free moving around while also enjoying a well-rested sleep!
  • Better Support, Better StabilityThe innovative 5-zone spring support systems are designed to work in perfect harmony with the gel memory foam, high density foam, as well as individually wrapped coils to ensure a balanced, refreshed sleep with less tossing and turning and minimal partner disturbance.
  • Fiber-glass Free, Healthier SleepZeffly mattress has been striving to provide you a better sleep, and also a healthier one. We use fire-retardant inner cover instead of fiber glass. Our mission is to provides the most ECO-friendly mattress for your healthier sleep.
  • Mattress in a Box With 20-Year WarrantyWe made mattress shopping online easier, we made life easier. Your mattress is compressed and rolled into a box before shipping. Please allow your mattress to expand to its original shape within 48-72 hours. Your mattress is covered with 20-year warranty and 100 nights free trial. Please feel free to contact us if you have any problem with your mattress.

Size: King


Special Feature: Pressure Relief


Fill Material: Gel Memory Foam


Brand: Zeffly


Product Dimensions: 80"L x 76"W x 12"Th


Top Style: Smooth Top


Color: White & Green


Coil Type: Pocketed Coil


Construction Type: Hybrid


Product Benefits: The combination of individual pocket springs and ventilated fabric adds stronger breathability to this mattress. Selected steel rims and high-density foam provide more powerful support for this mattress. Memory foam and other soft fabrics can greatly relax your body. See more


Item Weight: ‎74.8 pounds


Product Dimensions: ‎79.92 x 75.98 x 11.81 inches


Country of Origin: ‎Malaysia


Assembled Height: ‎12 inches


Assembled Width: ‎76 inches


Assembled Length: ‎80 inches


Assembled Depth: ‎12 inches


Assembled Diameter: ‎80 inches


Weight: ‎84 Pounds


Date First Available: January 29, 2023


Frequently asked questions

This product is currently out of stock. Please check back later for shipping info.

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • I love this mattress!
Style: 10 Inch Size: Full
I combed through review after review on these boxed mattresses. Let’s face it, once it is out of the box, it’s not going back in, how would you return it conveniently? You absolutely wouldn’t. This mattress is FIRM. I let it set up for 48 hours before laying down on it, that was enough time. I’ve read a lot where the edges of these mattresses have no support. On this one, it might be a tiny bit less supportive, but hardly noticeable at all. In fact, the only reason I even noticed it was because of reviews, so I purposely tried it out. I bought the Full size. My fiancé and I (neither of us are small) slept very comfortably on this bed (I bought the steel frame that had 18” height) and neither of us have any complaints. I can get up, or roll over, and it hasn’t disturbed him, and the same for me. It’s a very quiet bed. If you want as much value for what you are spending, this is a safe buy. If you need a lil more cushion, I would simply put the foam padding from Walmart on it. ... show more
Reviewed in the United States on November 7, 2023 by Lisa McFalls

  • Alright
Style: 10 Inch Size: Full
I had very little hope for a vacuum packed, folded mattress. That being said, it's nowhere near as bad as I thought it would be. It's very firm. So firm that it's almost hard. Now I like a firm mattress, but this may be a little too hard for my taste. So I'll probably get a pad. I slept on it last night for the first time, and I slept pretty well. No massive complaints. Now this is just a part time bed. My husband and I don't sleep together when we both work in the morning because he snores and I also wake up 2 hours before him. So this is just my bed 3 nights a week. But it's nice! The cats say it's nice too. ... show more
Reviewed in the United States on October 16, 2023 by T. Miller

  • Thank you, Amazon!
Style: 10 Inch Size: Full
I purchased this mattress a little over a month ago, and I can definitely say this is a very, very comfortable mattress! I haven’t had any issues with this mattress at all, and as crazy as it sounds, I feel like this mattress gets better and better each night! The instructions were to wait 72 hours before sleeping on it, but I waited about 48 hours to sleep on it (I felt it was good enough to sleep on at that point). The bed is very soft and cloud-like, yet supportive and slightly firm at the same time! I wake up with zero body aches in the morning, and so far, I’ve slept very comfortably each night with very little tossing and turning! If you are on a budget, I highly recommend this mattress! :) ... show more
Reviewed in the United States on October 13, 2023 by Kara Kaiser

  • Better than I ever expected
Style: 14 Inch Size: Full
This mattress is amazing. I waited 24 hours to sleep on it (which is why it was on my floor). The memory foam topper is very firm, so if you’re looking for a more medium/ soft mattress then this is not for you. After laying on it for a few minutes you sink in and have the best sleep. I have a lot of back pain and haven’t had that since sleeping on this mattress. I will say that there is no edge support so you can’t sit on the edge but I share the full size with my boyfriend and there’s no issues sleeping close to the edge. I highly recommend this mattress. ... show more
Reviewed in the United States on October 16, 2023 by Sarah Sarah

  • JUST WHAT YOU NEED!
Style: 14 Inch Size: Full
The quality of this mattress impressed me tremendously, ESPECIALLY FOR THE PRICE! The ONLY thing that I don’t care for is the fact that edges are not all that supportive, if you’re a heavier person, it will 100% support you in the center and all throughout the bed, but the edges are just a little softer than I thought. I would warn guest not to scoot or slide off too quickly. Don’t take that away from the fact that this is an extremely good mattress. I plan to buy an additional one for my other guest room. Mine personally didn’t take long to inflate AT ALL, it practically looked ready to sleep on as soon as it was out of the plastic. I purchased a full as seen in the photo. I hope that this helps y’all. If you’re looking for a sign, this is it…buy the mattress! ... show more
Reviewed in the United States on October 5, 2023 by Angel Angel

  • Get this mattress! Your back will thank you.
Style: 12 Inch Size: Full
We bought this full-size mattress in July 2023 to go with our full size metal bed frame. We are very pleased with this purchase. It inflated within the first 24 hours and we tried our best not to rest on it within the first 24 hours. But we had no other bed and had to sleep on it before the first 48 hours. It inflated very well and evenly to it full size capacity. There was no foul odor associated with the bed or packaging. The mattress is not flimsy or too soft, and is hard just enough to product well distributed support for my back. I often sleep without a pillow and feel so well rested in the morning. No sunken spots or edges on the mattress, so overall we are very pleased with our purchased and safe quick delivery. ... show more
Reviewed in the United States on October 2, 2023 by JTGE

  • Not bad for the price but not great
Style: 14 Inch Size: Queen
Pretty comfy! I sleep great on it… but there’s no support on the edge of the mattress so if you’re a side-sleeper, make sure you’re not on the edge of the bed lol. As long as you’re a foot “into” the bed, you’re fine but if you sit on the edge or sleep on the edge, you’ll slide lol or dip :) But it is comfy! I’m gonna add a mattress protector and a 3-inch memory foam cover to get rid of the bounce. Good product for the price. ... show more
Reviewed in the United States on October 4, 2023 by Jennifer King

  • Needed
Style: 10 Inch Size: Queen
Wanted Firm and this is it, although it is soft but still firm - the longer we use it the more it feels like it may be wearing out quickly, the top layer anyhow, sometimes I can feel the springs underneath. However I do wake up NOT sore?
Reviewed in the United States on October 19, 2023 by Toni Ohler

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