Specification AgeRangeDescription : Adult Brand : OFFTR z BulletPoint1 : 365-NIGHT HOME TRIAL – Not sure if it’s the right fit? Take your time. With our industry-leading 365-night home trial, you can sleep on it for a full year — completely risk-free. Questions or concerns? Our friendly customer support team is always here to help. BulletPoint10 : Assembly is required BulletPoint2 : SLEEP YOUR WAY — SIDE, BACK, OR STOMACH:OFFTR Z 12 Inch Queen Size Mattress adapts to your sleeping style. The plush comfort layer, combining low-resistance foam and gel memory foam, gently cradles your body’s curves. Beneath, responsive pocket coils provide dynamic support, keeping your spine aligned all night. BulletPoint3 : TARGETED SUPPORT WHERE IT MATTERS (ZONE SUPPORT) The Superior Zoned Support System, featuring 8.5” high-compression pocketed coils and reinforced lumbar foam ensure extra support for your lower back and hips. This reduces sinkage, promotes healthy spinal alignment, and helps alleviate back pain — so you wake up refreshed and ready to take on the day. BulletPoint4 : SOFT YET SUPPORTIVE—THE PERFECT FEEL SLEEPERS LOVE:It all starts with the OFFTRZ High-Compression Spring System—shorter coils for stronger support and a thicker, more contouring comfort layer. The 8.5” high-compression pocketed coils reinforce the edges and isolate movement, ensuring balanced comfort in this hybrid mattress. BulletPoint5 : MINIMIZED MOTION, MAXIMIZED SPACE:Say goodbye to sleep disruptions. Responsive coils isolate motion so you and your partner (or pet!) stay undisturbed. Reinforced edges prevent sagging and expand your usable sleep surface — stable, quiet, and durable. BulletPoint6 : CertiPUR-US Certified:All foams in this firm mattress are CertiPUR-US certified, ensuring durability and safety. We offer a 10-year worry-free warranty. Allow 72 hours for full expansion after unboxing. Unbox with caution as the mattress may expand rapidly. For any assistance, please contact our customer support team. BulletPoint7 : Overall Dimensions: 28.50" W x 11.73" D x 42.56" H BulletPoint8 : Drawer Dimensions: 25.94" W x 9.29" D x 5.0" H BulletPoint9 : Made in Denmark CareInstructions : Hand Wash Only Color : Cool White CompatibleWithMattressSize : Twin, Twin XL, Full, Queen, King, California King ConstructionType : Hybrid ExternallyAssignedProductIdentifier1 : 810162854034 ExternallyAssignedProductIdentifier2 : 0810162854034 ExternallyAssignedProductIdentifier3 : 00810162854034 ExternallyAssignedProductIdentifier4 : 0816853015524 ExternallyAssignedProductIdentifier5 : 5706887958490 ExternallyAssignedProductIdentifier6 : 0843029101415 ExternallyAssignedProductIdentifier7 : 00843029101415 FabricType : Metal FillMaterial : Memory Foam FillMaterial1 : Gel Memory Foam FillMaterial2 : High Density Foam FillMaterial3 : Memory Foam FillMaterial4 : Hybrid Springs FinishType : black FormFactor : Adjustable heavy-duty metal bed frame with double center support bar, sturdy side rails, and seven legs with locking wheeled rug rollers FurnitureFinish : black GroundToItemDistance : 13 inches IncludedComponents : Warranty card and manual IncludedComponents1 : Queen Size Bed Frame IncludedComponents2 : Headboard IncludedComponents3 : Footboard IncludedComponents4 : Installation Manual IncludedComponents5 : Installation Tools IsAssemblyRequired : 1 ItemDisplayDimensions_Height : 9 inches ItemDisplayDimensions_Length : 50 inches ItemDisplayDimensions_Width : 75 inches ItemDisplayWeight : 26 pounds ItemFirmnessDescription : Medium Firm ItemName : Queen Mattress 12 Inch, Medium Firm Hybrid with Memory Foam for Pressure Relief & Spinal Alignment - Supportive Comfort Without Sinkage, Superior Zoned Support, Extra Lumbar Support, Motion Isolation ItemPackageDimensions_Height : 161.29 centimeters ItemPackageDimensions_Length : 29.21 centimeters ItemPackageDimensions_Width : 29.21 centimeters ItemPackageQuantity : 1 ItemShape : Rectangular ItemTypeKeyword : mattresses Manufacturer : OFFTRZ Material : 14 Inch Material1 : Memory Foam Material2 : Gel Foam Material3 : Foam MattressCoilType : pocketed_coil MattressComfortLayerMaterial1 : memory_foam MattressComfortLayerMaterial2 : comfort_foam MattressType : standard_mattress MaximumWeightRecommendation : 551 pounds MinimumRequiredDoorWidth : 6 inches ModelName : 12Q ModelNumber : OFB2 MountingType : Freestanding NumberOfBoxes : 1 NumberOfItems : 1 NumberOfLayers : 5 NumberOfPieces : 1 PackageLevel : unit PartNumber : OFB1 ProductBenefit1 : Extra Lumbar Support ProductBenefit2 : Back Pain Relief ProductBenefit3 : Improves Sleep ProductBenefit4 : Posture Support ProductBenefit5 : Pressure Relief ProductBenefit6 : Zone Support ProductDescription : the perfect feel sleepers love(Soft yet supportive):It all starts with the OFFTRZ High-Compression Spring System—shorter coils, stronger support, and a thicker, more contouring comfort layer,Whether you sleep on your side, back, or stomach, or simply toss and turn, KOULBR Z Mattress offers the ideal balance of firmness, breathability, and comfort. Its multi-layer design includes a plush top with soft, flexible low-resistance foam and pressure-relieving memory foam that contours to your body and alleviates pressure. The dynamic response transition layer features responsive coils that provide tailored support for a customized sleeping experience. ProductSiteLaunchDate : 2025-04-08T07:00:00.000Z RoomType : Bedroom SafetyWarning : Unbox with caution as the mattress may expand rapidly; Allow 72 hours for full expansion after unboxing Scent : Unscented Size : Queen (U.S. Standard) StreetDate : 2018-11-27T00:00:01Z Style : 12 Inch SubBrand : OFFTRZ SupplierDeclaredDgHzRegulation : unknown SupplierDeclaredHasProductIdentifierExemption : 1 TargetAudience : adults requiring a durable and adjustable bed frame TopStyle : Euro Top UnitCount : 1 UnspscCode : 56101508