Hi there -- Thanks for your question. I'm not aware of Sealy using the term "Plush Firm" in their current product names, however this would not be completely inconsistent with past practices in the mattress industry. Historically, terms like "Luxury Firm," "Cushion Firm," and (less commonly) "Plush Firm" have been used to indicate that the product has a bit of a blend of surface softness with some underlying firmness. These days though, it's more common for such products to have names like "Medium," which most consumers seem to find more clear.

Now, to complicate matters a bit further, retailers do sometimes change (or even just tweak) the names of the models they carry. Changing a model name from "Medium" to "Plush Firm" or even from "Plush" to "Plush Firm" would be well within this purview. They might do this if, for example, they thought this change will make the product more appealing to their customers, and/or because they think it better describes the properties of the mattress relative to other products they carry.

Based on the information you provided, it sounds like the retailer is using "Plush Firm" as an alternative to "Medium" in this case. However, without being able to see and feel the specific product in question and the context of how it's shown by the retailer, I'm afraid I can't be 100% certain on this. Sorry we can't be more helpful on this one, but I hope that gives you enough information to figure it out.