Sleep never seemed so good with the medium 12" Euro top fabric mattress. High profile innersprings with CertiPUR-US certified foam provide support to the multi-foam layers and the layer of memory foam enhances comfort by further reducing pressure points and motion transfer, so the mattress provides a good night"™s rest. The mattress gets compressed, vacuum sealed then rolled and packed into a box for easy delivery and installation.Features:â—? Our hybrid mattress starts with a generous comfort layer and is supported by CertiPUR - US Certified high density foam that is artfully designed to resist sagging and has passed stringent testing standards for fatigue and harmful substances.â—? Designed with the hybrid construction of individual pocket springs and premium memory foam layers, it offers pressure relieving support and reduced motion transfer for uninterrupted sleep.â—? With 360 foam encase edge support system, this is a firm innerspring mattress that avoids the sag and sink of foam and air mattresses.â—? The mattress is compatible with adjustable bed base.â—? Our mattresses are compressed, rolled up and packed in a box for easy delivery and installation.â—? Note: Your mattress may take a little time (24-48 hours) to grow to its optimum size after coming out of the box. Benefits of waiting a full 24-48 hours include expansion & ventilation. Sleeping on the mattress before the 48 hours will not impact the quality or comfort of your new mattress. Sizes may vary slighty after expansion.â—? Mattress Top Type: Euro topâ—? Comfort Level: MediumSet Includes:â—? One - 12" King Hybird MattressProduct Dimensions:â—? Overall King Product Dimensions: 80"L x 76"W x 12"H