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King 12 Inch Hybrid Mattress, King Size Mattress Medium Firm in a Box

Based on 12 reviews
Condition: New
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$239.99
Save $120.00 was $359.99

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Availability: Only 10 left in stock, order soon!
Fulfilled by HeySleep

Arrives Sunday, Nov 8
Order within 8 hours and 22 minutes

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At a glance

Condition
New
Size
King (U.S. Standard)
Item Thickness String
12 in
Set
12"Medium Firm
Model
DSWG12KG-2A
Dimensions
80 x 76 x 12 in
Weight
96 lb
In the box
Box OpenerHybrid Mattress

Features 5

  • 7-ZONE LUMBAR SUPPORT & SPINAL ALIGNMENT A zoned pocket coil system provides targeted support across key areas of the body. Firmer support around the lumbar region helps promote natural spinal alignment, while more adaptive zones around the shoulders and hips gently cushion pressure points for balanced, full-body comfort.
  • MEDIUM FIRM COMFORT FOR SIDE & BACK SLEEPERS Multiple comfort foam layers contour to your shoulders and hips, while responsive pocket coils keep your body comfortably supported without excessive sinking. The balanced medium firm feel offers pressure relief with dependable support, making it especially well suited for side and back sleepers.
  • COOLING GEL MEMORY FOAM & BREATHABLE DESIGN Cooling gel memory foam, breathable fabric, and an open pocket coil structure work together to improve airflow and help release trapped body heat. The breathable hybrid construction creates a cooler, fresher sleep surface for more comfortable rest throughout the night.
  • QUIET MOTION ISOLATION FOR COUPLES Individually wrapped pocket coils respond independently to movement, helping absorb motion and reduce vibrations across the mattress. Tossing, turning, or getting out of bed is less likely to disturb your partner, creating a quieter, more stable sleep environment for couples and light sleepers.

Specs 34

Brand HeySleep
Size King (U.S. Standard)
Product Dimensions 80"L x 76"W x 12"Th
Item Weight 96 pounds
Item Firmness Description Medium Firm
Top Style Euro Top
Cover Material Polycotton
Number of Layers 8

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Nov 8

Yes, absolutely! You may return this product for a full refund within 90 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


met expectations
Size: King (U.S. Standard) Item Thickness String: 14 Inches Set name: 14"Medium Firm
after waiting on the mattress to open up in the open air, this mattress is by far the better option for the price! bring on a better nights sleep!
Reviewed in the United States on October 5, 2026 by Liz T

Good quality for the price
Very surprised at the quality of the mattress for the price I paid. It’s great for side and stomach sleepers. No weird smell and easy set up. I recommend not being too hasty and letting it inflate the required time. It has a little bounce to it but it’s quiet. Has great support for me and I have no back pain ... show more
Reviewed in the United States on June 1, 2026 by Destini

Matress
Very comfortable, good quaity for a great price.
Reviewed in the United States on June 7, 2026 by gloria k

Perfect Balance of Comfort & Support – Exactly What I Was Looking For
Size: King (U.S. Standard) Item Thickness String: 14 Inches Set name: 14"Medium Firm
I’ve been sleeping on this 14 inch King hybrid mattress for about a week now, and honestly, I’m really happy with it. I was looking for something not too firm and not too soft, and this one feels just right. The top layer is soft and comfortable, but you can definitely feel the support underneath—especially around my lower back. I’ve had issues with softer mattresses before, but this one actually helps me wake up without that usual stiffness. Setup was super easy. It expanded pretty quickly after opening, and there was barely any smell, which I appreciated. I also like how it looks—it has a clean, modern style and honestly feels more expensive than it is. Overall, if you’re looking for a King size hybrid mattress that balances comfort and support, this one is definitely worth it. ... show more
Reviewed in the United States on August 24, 2026 by DanaT

Better Than Nectar & DreamCloud? Honestly… Yes.
Size: King (U.S. Standard) Item Thickness String: 14 Inches Set name: 14"Medium Firm
I spent a lot of time researching mattresses and was originally considering brands like Nectar and DreamCloud. After comparing prices and reviews, I decided to give this one a try—and I’m honestly glad I did. Right out of the box, the setup was simple and hassle-free. It expanded quickly and was ready to use within a day, with only a very light smell that faded fast. In terms of comfort, this mattress really surprised me. It has that perfect medium-firm feel—supportive without being too hard, and soft enough to relax into. Compared to some foam-heavy mattresses like Nectar, this one feels more balanced and doesn’t make you feel “stuck.” And compared to DreamCloud, it delivers a very similar hybrid feel but at a much better value. What really stood out to me is the support. It contours nicely to the body and has helped reduce pressure on my back and shoulders. I’ve been waking up feeling more refreshed and without the usual soreness. Also, the motion isolation is excellent. If you share the bed, you’ll barely notice movement from the other side. It’s quiet, stable, and sleeps cool through the night—which is a big plus. Overall, this feels like a high-end mattress without the high-end price tag. If you’re considering Nectar or DreamCloud but want something more affordable with similar (or better) comfort, this is 100% worth trying. ... show more
Reviewed in the United States on August 24, 2026 by Kyla Witter
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