Onlylucky Firm King Mattress 14 Inch, Luxury Hybrid King Size Mattress in a Box, 7-Zones Individual Pocket Springs, Extra Hip/Shoulder/Lumbar Support, Fiberglass-Free, 365-Night Trial, CertiPUR-US

★★★★★ 5.0 114 reviews

$339.99
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$339.99
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Free shipping Free 30-day returns

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Product details

Management number 209758404 Release Date 2026/03/29 List Price $136.00 Model Number 209758404
Category
  • 【Pain Relief & Spine Alignment】Onlylucky firm king mattress features multi-layer memory foam and reinforced individual pocket springs for comfort and targeted support. The ergonomic 7-zone support system evenly distributes body weight, relieves pressure points and improves spinal alignment, offering softer cushioning at shoulders/hips while enhancing lumbar support to fully fit your body curves. Suitable for all sleeping positions, it helps reduce back pain for luxurious sleep.
  • 【Stay Cool & Comfort Sleep】Featuring a Euro Top design for enhanced comfort, Onlylucky king bed mattress combines breathability with advanced cooling technology for optimal temperature regulation. It uses skin-friendly and breathable fabric that is fiberglass-free, effectively boosts breathability by 30%. The gel memory foam helps you stay cool and dry all night. The individual pocket spring system and egg crate foam layer improve air circulation delivers a comfortable sleeping experience.
  • 【Upgraded Enhanced Edge Support】Onlylucky king size mattress 14 inch is reinforced with 2.1–2.3mm perimeter coils and high-density support foam on the sides to prevent sagging. It effectively prevents body roll and expands sleep space, reduces the risk of edge roll during nighttime movement and improves convenience when sitting, lying down, and getting in or out of bed. The upgraded edge design also protects the internal structure and extends the lifespan of the mattress.
  • 【Motion Isolation & Quiet Sleep】Onlylucky king memory foam mattress features hundreds of premium quiet individual pocket springs and slow rebound memory foam, effectively absorbing noise and vibration caused by turning over during sleep, minimizing motion transfer to your partner and allowing you to enjoy deep sleep without being disturbed, making it ideal for light sleepers.
  • 【CertiPUR-US Safety & 365-Night Trial】Onlylucky king mattress in a box comes vacuum-sealed for easy transportation. Designed to fit most standard bed frames, it features convenient side handles for easy mobility and position adjustment. Onlylucky hybrid mattress king is CertiPUR-US certified, and we offer a 365-night trial and 24-hour customer assistance. For optimal comfort, please allow 24 to 72 hours for the mattress to fully expand.
Size King
Color Grey
topstyle Euro Top
Brand Name Onlylucky
Item Depth 14 inches
Model Name King Size Mattress
Style Name 14 Inch
Manufacturer Onlylucky
Model Number King Mattress 14 inch
Fill Material Gel Memory Foam, High Density Foam, Memory Foam
Material Type Gel Foam, Individual Pocketed Springs, Memory Foam, Polycotton
Cover Material Polycotton
Item Dimensions 80 x 76 x 14 inches
Number of Layers 8
Product Benefits Back Pain Relief, Improves Sleep, Posture Support, Pressure Relief, Reduces Toss & Turn, Stress Relief
Construction Type Hybrid
Mattress Coil Type Pocketed Coil
Additional Features Breathable, Fire Retardant, Low Motion Transfer, Pressure Relief, Temperature Regulating
Age Range Description ALL
Weight Capacity Maximum 800 Pounds
Number of Mattress Coils 800
Item Firmness Description Firm
Mattress Comfort Layer Material Gel Memory Foam, Memory foam
Item Dimensions L x W x Thickness 80"L x 76"W x 14"Th

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