Expandable Cover included with 4.3 Cloud9 Cal-King 4 Inch 100% Visco Elastic Memory Foam Mattress Topper Includes Expandable Removable Cover to Protect Your Memory Foam Topper and Easy to Clean Includes Expandable Removable Cover to Protect Your Visco Elastic Memory Foam Bed and Easy to Clean 20 Year Limited Warranty Direct From Cloud9 Bedding Visco Elastic Memory Bed Company Exclusive formula makes you feel like you are floating on CLOUD9, sailing forth into a sea of dreams Made in the USA, does not contain any toxic ingredients, new foam odors will disipate if aired out.