Cover plus 3.3 Cloud9 Queen 3 Inch Visco Elastic Memory Foam Mattress Pad Bed Topper Overlay 100% Visco Elastic Memory Foam For Comfort with Cover to Protect Your Visco Elastic Memory Foam Topper to Better Ensure That Your Visco-Elastic Mattress Pad Remains in Good Condition 20 Year Limited Warranty Direct From Cloud9 Bedding Visco Elastic Memory Bed Company Includes Expandable Removable Cover to Protect Your Visco Elastic Memory Foam Topper For Years Exclusive formula makes you feel like you are floating on CLOUD9, sailing forth into a sea of dreams Cloud9 Bedding supple visco-elastic memory foam allows for freedom and ease of bodily movement. Cloud9 proprietary formula establishes the luxuriant, visco-elastic fourth generation material.