Talalay vs Dunlop Breathability

I’m excited to say I will be making my first mattress purchase, as an adult, in a few days. I’ve been doing a ton of research in the last couple of months, and am astonished at the overwhelming number of options available these days!

I’ve firmly decided to go with an all latex mattress, and am fairly certain I can find the right stacking combination, for me, if I choose 1 each of soft, medium, and firm layers - I’m 5’6" and 125 lbs. I fall asleep on my side, but wake up on my back.

My main question is if there is a difference in the breathability between talalay and dunlop? I’ve read general statements that latex sleeps cooler than other materials, and I’ve also read that talalay sleeps cooler than dunlop. From my understanding of what I’ve read, talalay is slightly ‘bouncier’ than dunlop. For that reason, I’d prefer the dunlop. However, if talalay is noticeably cooler, I could easily forget about the extra ‘bounce’.

Another question, of much less importance - do today’s mattress manufacturer’s still make mattresses with edges that have zero/little support? I tend to sleep near the edge of the bed, and have felt like I was going to fall out if I turned over. Is this something I would need to be prepared for, with a latex mattress?

Talalay does sleep a bit cooler than Dunlop because it has a more consistent cell structure and it is bit more “open-celled.” Aside from that, having a top layer of Talalay latex can be important in making sure you get the right combination of contour and support. Additionally, Talalay can add more of what’s called “secondary support” which fills in the gaps between your body and the mattress and can actually help maintain proper spinal alignment.

Latex mattresses have more edge support than memory foam but less edge support than a spring mattress, and that’s the best way I know to put it.