Hi mike&,
Post #89 here has more information about the different types of mattress protectors and some of the pros and cons of each and some examples of each type.
The Dormeir is a very high quality protector and is one of the favorites of many high end mattress retailers who frequently recommend it as being one of the best of its type. It’s among the best of the wool mattress protectors and has less effect on the “feel” of the mattress than many other similar protectors because it’s a little more stretchy and compliant. It’s benefit is the wool which gives it some water resistance and helps with temperature regulation.
Phoenix