Wool fibers dyed with royal purple from around 1,000 BCE found in Timna Valley, Israel. (Dafna Gazit, courtesy of the Israel Antiquities Authority) (CN) — Evidence of fabric dating back to 3,000 years ...

Its top comfort layer is called the “GelFlex Grid,” which is entirely unique to the Purple brand. This stuff isn’t even foam. It's actually a polymer material that was originally developed ...

The luxury purple material sandwiches one or two layers of a whitish material made mainly of the mineral huntite. In the ...

The name of the special top layer was changed to the "GelFlex Grid," but the material itself remained the same, which is exactly what I wanted. Overall, my impression of the Purple mattress is ...