Hi Marla,
The entry level Cotton Camilla model uses 1.5 lb density base foam and also doesn’t have the wool quilting. Both the Bamboo Bliss and the Aloe Alexis have the higher density 2.17 lb base foam and wool in the quilting layer.
You can read a little more about some of the properties of wool quilting in post #6 here.
Post #2 here and post #29 here also includes more information about all the factors that can affect the temperature regulation of a mattress besides just the foam used in the comfort layers.
Even though latex as a category is the most breathable of the foam materials … natural fibers like wool, linen, cotton, silk, and viscose fibers like bamboo and other rayon type fabrics will wick and disperse moisture (and the heat it contains) more effectively over the course of the night than any foam material by itself and the quilting, ticking (cover), mattress protector, sheets, and bedding in your sleep system can have just as big an effect on temperature regulation as the foam used in the mattress.
Phoenix