We purchased 2 TwinXL for our new Adjustable Ghostbed.  Mattresses arrived within 4 day of order.  They inflated immediately to full size and no noticeable odd smells, though we let them sit on the floor for 2 days with the windows open.  After just one night's sleep both husband and myself woke up without aches and pains.  Can't beat the price.  So far, very happy.  Would purchase again and plan to get one for my Mom.  Update:  Turns out I had to return the one for my husband as he needs a softer mattress.  Staff made the return easy and have ordered him a more plush mattress.  Meanwhile, I am still loving his mattress.