Used for 9 months. Almost new!

Linenspa 8 Inch Memory Foam and Innerspring Hybrid Mattress - Twin: https://www.amazon.com/gp/product/B01IU6RJYA/ref=oh_aui_search_detailpage?ie=UTF8&psc=1

Zinus 14 Inch SmartBase Mattress Foundation, Platform Bed Frame, Box Spring Replacement, Quiet Noise-Free, Maximum Under-bed Storage, Twin: https://www.amazon.com/gp/product/B006MIPW70/ref=oh_aui_search_detailpage?ie=UTF8&psc=1

Additionally a queen mattress also available: Bought 20 days back for temporary visitors. Available for sale at $180 and price negotiable!
https://www.amazon.com/Zinus-Memory-Foam-Green-Mattress/dp/B00Q7EPSHI/ref=sr_1_1?s=home-garden&ie=UTF8&qid=1531949037&sr=1-1&keywords=twin%2Bzinus&th=1