After ordering a new king-size bed, I needed a new mattress. I wanted the same mattress just in the bigger size.  If possible this one is even more comfortable than the last. It feels like a real upgrade. I've had it out, decompressing and airline before the new bedframe arrives and it has reached its full height and the chemical smell has dissipated. It really is worth making the effort to do this as it will enhance the mattress. Absolutely delighted and great value.