W designated latex?

some some new vita talalay with the “WS7” stamped on the side. Can anyone confirm that they have resumed using the “WS” designation for their superior/blended line? From earlier posts I was under the impression that they had dropped the W and were using the S only?

still looking for info on my previous post. Has Vita Talalay gone back to using “W” designations for its Superior blended product such? For example, “W8S” ?

I contacted Vita Talalay and they said that while they have moved to the shortened “S” designation, to reference their superior (blended) product, the older “W” designations is still used in production when marking the latex itself.