The "Pinehurst Pillowtop" is the Ultimate Soft  Pillowtop. 
 
This is the Top of the Line Pillowtop made by Chatham and Wells. 
18 inches Thick - Plush Soft Feel - Luxury Support - Tufted from Quilt to Base
 
Spring System:
a. Very best quality SAMSON high gauge steel Independent coil create a deep-down firm support that is will never break down.
b. Engineered in Switzerland for optimal precision
Ultimate Edge Support: 
a. Foam encasement perimeter foam block around the coils creates a sturdy edge that responds along with the coils, so you can sleep all the way to the edge without feeling like you’re about to fall off, and you can sit comfortably without having it collapse.
b. Additional patented Picture Frame edge support is pitched up at the edges of the mattress enables you to sleep to the edge of the mattress without rolling out of the bed. This is the firmest sitting edge any mattress can have.
Support Layers:
a. 1”High Density Foam is exceptionally durable and long-lasting, with properties that allow the mattresses to have long lasting comfort
b. 3” Super-soft foam creates a softness for the mattress.
c. 4” Talalay latex enables the mattress to breathe decreasing hot sleeping spots in the mattress.
d. Box stitch handles do not give when lifting the bed.
e. Joma Wool underneath the knit to help cool you down when you are hot and heat you up when you are cold.
f. 4” Chattam Wells patent quilt was designed to create the perfect feel for maximized relaxation.