I sent this thread off to a friend who is a research scientist for Kimberly Clark in the division that makes car cover materials. Here's his response. If anyone would like more info, or his e-mail address to ask specific questions, PM or e-mail me.
______________________________________
$$$$ Weathershield/Superweave are the same fabric.
Positive + The fabric is water resistant, compact and can be washed at home.
Negative - Little to no dent and ding protection, even light wind conditions can make it difficult to remove/install cover. Good for indoors and
outdoors.
$$$ NOAH is a 4-layer fabric using breathable film technology to provide the barrier or water resistant property. NOAH also has a bicomponent technology for a soft/silky feel.
Positive + NOAH isrecommended for high-moisture applications. Great dent and ding protection.
Negative - can be bulky. Good for indoors and outdoors.
$$$ Dustop is a 4-layer fabric specifically designed for indoor use.
Positive + This fabric is soft as flannel and has 2-3 times more "dust hold-out" compared to flannel. Great dent and ding protection.
Negative - can be bulky. Good for indoors.
$$ Evolution/Technolan/Stormweave is a 4-layer fabric that has been in the market for 21+years and remains a #1 seller. This material was
called BLOCK-IT 400 Series for about 1 year before going back to the Evolution name.
Positive + The fabric is the best UV blocking fabric on the market. Good water resistance, great dent and ding protection.
Negative - can be bulky. Good for indoors and outdoors.
All the above fabrics are very good with outstanding warranty protection. To help select the best fabric for your needs, ask yourself a few questions:
1. How much do I want to spend?
2. Will the cover be used indoors or outdoors?
3. In what type climate will I be using the cover?
4. What element am I protecting the car from? Rain? Sun? Dust?
5. Do I have adequate space to store the cover in the trunk?
6. Is it important to be able to wash the cover at home versus a laundromat?
7. How important is dent and ding protection to me?
Two final thoughts:
For the little extra cost, custom-fit is will worth it. A custom-fit cover will fit the car like a glove and form to the contour of the car.
Also, beware of some cover offers on eBay. Some of the auctions claim to offer a custom-fit 3-layer brand name fabric that sold new for $159. What you get is a single layer, universal-fit nonwoven material that
sells in large retail stores for $19.99.
To learn more, you can visit
www.block-it.com