Talalay Frothing Process - Produces a much Higher Quality Latex foam as the Weaker Air Bubbles are Removed.
Which is better, talalay latex or dunlop latex? The relevant question is not as much about which is better as it is about where and how it's being used in the mattress. When latex is derived from the hevea brasiliensis tree, it has the consistence of maple syrup. There are 2 primary processes used to transform it to the latex foam used in mattresses; the talalay process and the dunlop process.
To spare you the technical details, the dunlop process produces a latex foam that is more dense, while the talalay process produces a latex foam that is lighter and has more air in it. If we use cake as an analogy, dunlop would be like pound cake and talalay would be like angel food cake. If you were to weigh each as latex cores, the dunlop would be heaver because it has more latex in it.
As a top comfort layer of a mattress, talalay is typically preferred because it is less dense which provides better pressure relief. As a mattress core however, dunlop is preferred because it's dense cell structure will hold the shape of the mattress better over time & will be less prone to sagging or indentations.
Nine out of every ten "natural latex mattresses" advertised are made solely of 100% dunlop latex, which is fine if you're a back sleeper and prefer a firmer feel; however, studies show a top layer of talalay latex does a better job of relieving trigger points in your hips and shoulders, especially if you're a side sleeper. The optimal latex mattress design would be a 100% natural dunlop core, which is denser to prevent sagging, with a 100% natural talalay top layer for better pressure relief.