ZINUS 6 Inch Green Tea Memory Foam Mattress, Queen, Fiberglass Free, Patented Custom Contour Support, Sturdy Base Foam, CertiPUR-US Certified, Mattress in A Box, White Selling a mattress, originally priced at 183, now asking for 100 (negotiable). 99% new — barely used, only slept on for about two weeks in total over the past year.