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Experience the perfect blend of support and comfort with the Firm King Mattress 12‑inch Premium Hybrid Mattress in a Box. Engineered for back and lumbar relief, this pocket‑spring mattress delivers superior motion isolation, making it ideal for couples and anyone seeking a restful night’s sleep.
Key Highlights
- 12‑inch firm feel with targeted back & lumbar support
- Hybrid construction: pocket springs + high‑density foam
- Advanced motion‑isolation technology for undisturbed sleep
- Compressed and shipped in a convenient box for easy delivery
- King size dimensions (76″ × 80″) – fits standard king‑size frames
- CertiPUR‑US® certified foams – safe, low‑emission, and hypoallergenic
Why It’s Perfect for Your Back & Lumbar
The firm yet responsive feel of this mattress is achieved through a layered design that aligns the spine and relieves pressure points. The reinforced lumbar zone provides extra support where you need it most, reducing morning stiffness and promoting healthier posture.
Hybrid Construction & Materials
- Pocket Spring Core: 1,200 individually wrapped coils work independently to reduce motion transfer and adapt to your body’s contours.
- High‑Density Support Foam: 2‑inch base layer adds durability and prevents sagging.
- Responsive Comfort Foam: 1‑inch layer offers a subtle bounce while maintaining firmness.
- Cooling Gel‑Infused Top Layer: Regulates temperature for a fresh sleeping surface all night.
Motion Isolation for Couples
Thanks to the pocket‑spring system and foam layers, movement on one side of the bed stays localized, allowing you and your partner to move freely without disturbing each other.
Easy Setup – Mattress in a Box
Each mattress arrives compressed, rolled, and sealed in a sturdy box. Simply unbox, unroll, and let it expand for 24‑48 hours. No heavy lifting or professional installation required.
Size & Fit
- King: 76″ × 80″ × 12″
- Fits standard king‑size bed frames, platform beds, and adjustable bases
- Weight: 115 lb (approx.) – manageable with two people
Health & Safety
All foams are CertiPUR‑US® certified, ensuring they are free from harmful chemicals, ozone‑depleting substances, and heavy metals. The mattress is also resistant to dust mites and allergens.
Customer Satisfaction Guarantee
We stand behind our product with a 100‑night sleep trial and a 10‑year limited warranty. If you’re not completely satisfied, return the mattress for a full refund—no questions asked.
Upgrade to the Firm King Mattress 12‑inch Premium Hybrid today and enjoy a supportive, cool, and motion‑free sleep experience night after night.
Price: Original price was: $ 493.99.$ 279.73Current price is: $ 279.73.