55" x 75". I have had them both in storage 'forever' for occasional 'friends visiting' use but have since purchased a real elevated bed for my guest room. It has never had smokers nor pets anywhere near it and looks in great condition. The egg-crate topper is 2" thick and the foam is 3" or 4" thick. I can sell separately also. I also sleep on foam and an egg crate topper and never had back problems in my life!