LUCID 5 Inch Gel Memory Foam Mattress - Twin Size

I have no idea why people give this good reviews My 5in mattress only is 3 inches thick after fluffing it out. Selling 5in mattresses that are really only 3in thick is plain fraud in my book...returned Update: just prior to return I noted the mattress did expand more. pick up was over 1 week from delivery date. it took well over 48 hrs to expand further and its still not 5in. (about 4inch currently). I don't know if i wait longer it will eventually expand to full 5 inches but after over 1 week I'd say that's too long to wait regardless. as it stands I did lay on the mattress just to see and it wasn't comfortable at all when placed on a floor. might be better on a bed frame. was meant for my 5-year-old son anyway trundle bed. (that's why needed low profile mattress). not sure if would have ever been comfortable as many reviewers write but at 4in currently the bed is just too thin. upgraded to 2 stars as not quite as bad as first thought