Description Get ready for the royal treatment with the 12" Crown Jewel by Sealy® foam mattress – where serious comfort meets a touch of extravagance! Dive into a world of coziness with our SealySupport™ and SealyComfort™ Gel Foams, topped off with an extra layer of SealyComfort™ Gel Memory Foam for that extra cool and conforming feel. Our moisture-wicking, antibacterial cover ensures the mattress stays fresh and protected. Plus, it's all neatly compressed in a shippable box – because great sleep should come with a dash of fun convenience! Dimensions Twin - 38"W x 75"L Twin XL - "38"W x 80"L Full - 54"W x 75"L Queen - 60"W x 80"L King - 76"W x 80"L In box - 16"W x 16"D x 46"H Features & Benefits Brand Sealy Mattress Type Foam Comfort Level Medium Adjustable Base Compatible Yes Cooling Layers Yes Cooling Cover No Removable Cover No Bed-In-A-Box Yes Flippable No Motion Transfer Reduction  Yes Extra Support Layers No Mattress Top Tight-Top Edge Support No    Medium Memory Foam Comfort: SealyComfort™ Gel Memory Foam combines with SealyComfort™ Gel Foam and SealySupport™ Foam to deliver breathable comfort and a deeper level of conforming support for a medium feel.  Protective Stretch-Knit Cover: A soft knit-fabric cover with MoistureProtect™ helps you stay cool and comfortable, and Surface-Guard Technology™ protects the mattress surface from odors and staining caused by bacteria and common allergens.  Shippable Convenience: A mattress with the quality, durability, and comfort you expect from Sealy® that comes conveniently compressed in a box for easy shipping and transportation.  Quality You Can Trust: Sealy® mattresses have been proudly designed, carefully assembled, and thoroughly tested right here in the USA. Warranty  10 Year Limited Warranty* See store for details. *Any questions or concerns please contact the store, or use our online chat.