Hi there -- Thanks for your question. Yes, you're referring to mattresses from different time periods, and there are a lot of differences between them.

The first one you mention is the currently available product line, known as Tempur-Breeze. There are four models in this product line, including the Luxe-Breeze Firm and Luxe-Breeze Soft. You can see those models here:

• Tempur-Pedic Luxe-Breeze Firm: https://www.goodbed.com/mattress-model/tempur-luxe-breeze-firm/
• Tempur-Pedic Luxe-Breeze Soft: https://www.goodbed.com/mattress-model/tempur-luxe-breeze-soft/

To get a sense of the features in the current Tempur-Breeze collection, which includes a number of upgrades to the cooling functionality, I'd recommend watching or reading our coverage of it here: https://www.goodbed.com/reviews/tempur-breeze-mattress-preview/

The second one you mention was discontinued about a year ago (though there are still some closeout models available). and was known more commonly as the Tempur-Contour Luxe Breeze. You can see that model here:

• Tempur-Contour Luxe Breeze: https://www.goodbed.com/mattress-model/tempur-contour-luxe-breeze/

You can see a plain English overview of the general features of the now-discontinued Tempur-Contour line here: https://www.youtube.com/watch?v=nuXIJgW7peU&t=5s

And you can see a similar overview of the "Breeze" cooling features that are included in the Contour Luxe Breeze model here: https://www.youtube.com/watch?v=0qWWq_3dQ8g

I hope that's helpful.