Unfortunately, even after removing mattress from packaging and following all instructions, our mattress did not properly decompress. Corners are all misshapen and overall thickness of mattress only reached 10 inches even though we ordered the 12 inch. Mattress, as pictured, is 4 different layers of foam, these foam layers sit together unevenly and give an overall unfinished and sloppy look to the mattress. Appears to be egg crate foam sheets. We have purchased other products from Zinus and been very pleased with them. While I wasn't please with this product, Amazon customer service was very helpful in resolving our problem.