Dynamic VS Dryskin VS Dryskin Extreme VS 3XDry VS WB-400 VS WB-formula
Alright here it goes: The Dynamic family is huge for Schoeller, a quick description would be : 4 way stretch woven nylon, non coated or laminated.
so usually pretty light stretchy and very breathable.
Dryskin is basically a Dynamic fabric but while being woven they weave stray yarn on the inside which is in turn sheered off to desired length. What this achieve is that the fabric itself wont be directly sitting on your skin but the little sheered polyester yarns " Fuzz" acting like tentacle, collecting and wicking sweat to the face where it can be disperse and evaporated.
Dryskin Extreme is the same except that its woven with a Cordura yarn for added abrasion resistance.
Now 3XDry is a moisture management chemical appliqué, it can be applied to almost all fabric. On the outside fabric it acts as a spoof-up DWR repelling and beading water, and on the inside it greatly helps with vapor transportation hence the better wicking, faster drying, water and dirt repelling. You should also check out Nano Sphere Technology it's very cool...
Ok , The WB400 is a Foam coating that is applied to any fabric. They take for instance a Dynamic fabric roll and pass it on a conveyor belt that both applies and uses a knife blade to spread the foam coat equally. Now this process can be used on its own but because of the rubbery feel of the coating ( not very nice against the skin ) they usually laminate fleece or knits to it at the same time that they coat the fabric.
The WB400 coating is cool because it achieved something kind of unique and that is a fabric rated at 3CFM ( CFM stand for cubic foot per minute of air permeability when subjected to 35 knot of wind).
In the real world that means that the fabric will breath very well compare to Gore's Windstopper rated at 0CFM, but is still very windproof.
We all know that breathability and water/windproofness is in direct opposition, at 3 cfm you won't feel clammy from moderate exertion, you won't notice wind unless standing in front of a Gale and it's going to take a very long time for you to get wet from rain, especially if the face fabric has a good DWR.
Finally the WB Formula is in the same line as the WB400 except that it is a membrane not a coating and that this membrane is fully waterproof/windproof,
So of course less breathable.
I hope this help and that my grammar and spelling are not too bad, English being my second language.
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Gabriel