Purchased on Ordered on April, 2018 - I have bill as well.
Signature Sleep Contour Encased Coil 8 Inch Mattress, Twin - Reversible - CertiPUR-US certified foam
It is in very good condition. Am selling coz am moving out of country.
https://www.amazon.com/gp/product/B004LQ1RJ2/ref=oh_aui_search_asin_title?ie=UTF8&psc=1