This mattress is AMAZING!  We purchased this for our 14 year old son (who is going through a growth spurt... he's 6'2" tall and every bed we tried was just not comfortable).  The mattress arrived, early, as usual Wayfair under promises and over delivers!  This item was at our doorstep within two business days.  I would highly recommend this product.  We have it on a platform bed with no box spring, there is none needed with this mattress!