Technalon covers, using Block-It Evolution 4-layer polypropylene construction fabric, provide superior protection in all weather conditions. Often imitated, but never equaled, U.S. made Evolution fabric covers are used by millions of satisfied car enthusiasts around the world.

Superior Protection - Acid rain, industrial pollutants, tree sap and bird droppings will not harm the fabric.
Dries Easily - Moisture is not absorbed by the fabric fibers.
Breathable - Allows air to circulate through the fabric.
Dust / Pollution Barrier - The two middle layers of 400 Series fabric act as a filtration barrier against most airborne pollutants as small as 0.1 microns (smaller than talc).
Impact Absorption - 4-layer thickness absorbs impacts better than any other vehicle cover fabric to help protect the finish from nicks, dings, dents and scratches.