Extra Firm King Mattress 14 Inch Lumbar & Hip Support Hybrid Mattresses in a Box - Pressure Relief Hybrid Mattress with Cooling Comfort Spinal Alignment - CertiPUR-US, Fiberglass Free, 365-Night Trial

Features

• Extra Firm King Hybrid Mattress in a Box / 14 Inch King Size Mattress / Extra Firm Hybrid Mattress King for Lumbar Support & Pain Relief
• Optimal Firmness Where You Need It - Hundreds of high-compression springs adapt to your body's unique curves, delivering targeted support and pressure relief. Reinforced with industrial-grade steel, these springs hold their shape for years of use. So you wake up without stiffness - just refreshed, balanced comfort
• Motion Isolation for Undisturbed Sleep - Sleep soundly through any movement with the advanced pocketed coils. This independent spring design absorbs 83% of motion before it reaches your side of the bed, creating a personal sleep zone that stays perfectly still - no matter how much your partner moves
• Breathable Mattress King Size - Unlike all-foam mattresses that trap heat, this coil-and-foam hybrid mattress combines responsive coils with premium foam layers to promote continuous airflow. The open structure of the hybrid system acts like tiny ventilation channels, helping you stay comfortable throughout the night
• Ideal Spinal Alignment for All Positions - Engineered to maintain optimal spinal alignment all night, this king mattress caters to all sleep positions. Side sleepers enjoy perfect cushioning for shoulders and hips, back sleepers receive enhanced lumbar support, while combination sleepers experience effortless transitions - all for deeper, restorative rest
• Fiberglass-Free, Certified Materials - Worried about chemicals in your mattress? VISCOFLEX 14-inch mattress king contains no fiberglass or off-gassing. With ultra-low VOCs that meet strict CertiPUR-US standards, it lets you breathe easy and sleep safe with your family
• About VISCOFLEX - Certified by CertiPUR-US and OEKO-TEX, VISCOFLEX king size mattresses are crafted to offer lasting comfort and peace of mind. Enjoy a 365-night home trial and 10 years of coverage, with dedicated sleep consultants ready to support you every step of the way