Onlylucky King Size Mattress, 14 Inch Extra Firm King Mattress in a Box, Hybrid Mattresses with Gel Memory Foam & Pocket Springs for Comfort Sleep, Spinal Alignment, Motion Isolation, 365-night Trial
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Selected Option
100-day refund / replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Size: King
Style: 14 Inch - Extra Firm
Features
- Luxurious Comfort for SleepThe Onlylucky 14 inch king size mattress is constructed with innovative materials, featuring three layers of functional foam and individually pocketed coils system. The synergistic combination of gel memory foam and pressure relief foam effectively distributes body pressure while conforming to body contours, seamlessly adapting to diverse sleepers. As you sink deeper into the extra firm king mattress, the high density foam dynamically increases its support density, delivering an exclusive comfort experience.
- Advanced Cooling TechnologyThe Onlylucky king size memory foam mattress is made with finely woven, breathable fabric that allows air to flow freely, effectively dissipating steam and sweat from the surface to keep your body comfortable and dry all night long. Additionally, the increased foam content with egg-crate foam structure significantly improves internal airflow, preventing heat accumulation and ensuring you stay cool throughout the night.
- 7 Zoned Ergonomic DesignCrafted with ergonomic precision, our OnlyLucky king mattress features 7 distinct sleep zones that intuitively cradle your body's natural contours. This intelligent design distributes weight with perfect equilibrium, melting away pressure points while gently aligning your spine into its optimal position. Sleep that feels effortlessly supportive, leaving you waking refreshed, free from aches, and truly recharged.
- Zero Motion Transfer & Undisturbed SleepThe Onlylucky hybrid king mattress integrates an advanced pocketed coil system with hundreds of individually wrapped springs to prevent tangling. This design achieves zero motion transfer, ensuring undisturbed sleep whether sleeping alone or with a partner. The reinforced edge support maintains stability even when you sit or sleep near the edge, so you dont have to worry about rolling off.
- Enhanced Comfort and SafetyOnlylucky king bed mattress is crafted with skin-friendly and fiberglass-free materials. All memory foam is CertiPUR-US certified, ensuring a healthy, luxurious sleep space. Enjoy a 365-night trial to test its balanced blend of support and cushioning, with no odor. It's the ideal pick for rest that feels both cozy and secure.
- King Mattress in a BoxOur mattresses come in a box conveniently vacuum-sealed for effortless transportation and setup. After unboxing, please allow 2472 hours for the mattress to fully revert to its original shape. We also offer customer service and a tailored satisfaction guarantee, ensuring a seamless, satisfying experience from purchase to daily use.
Brand: Onlylucky
Size: King
Product Dimensions: 80"L x 76"W x 14"Th
Top Style: Euro Top
Cover Material: Exquisitely Soft & Breathable Fabric
Fill Material: Gel Memory Foam
Weight Limit: 800 Pounds
Special Feature: Breathable, Durable, Fire Retardant, Low Motion Transfer, Pressure Relief
Color: Grey
Coil Type: Pocketed Coil
Product Dimensions: 80 x 76 x 14 inches
Item Weight: 118.7 pounds
Manufacturer: Onlylucky
Item model number: 14 Inch King Mattress
Date First Available: August 8, 2025
Frequently asked questions
To initiate a return, please visit our Returns Center.
View our full returns policy here.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- PayTomorrow Financing
- Financing through Apple Pay
Learn more about financing & leasing here.
