You have been reading some of the older blog posts. Things have changed and that information is no longer valid.
The Sealy Posturepedic mattresses, available at hotels, have no memory foam in them.
At retail stores, all Posturepedic mattresses are loaded with memory foam.
Sealy will not make the specifications used in hotel mattresses for retail stores, despite seeing stores claiming to have hotel grade mattresses.
Buy the mattress through the hotel. They are the best Sealy Posturepedic mattress on the market.
Do Not Buy a Sealy Posturepedic mattress from any retail store.