Cocoon Cover Systems co-developed a patented expanded polytetrafluoroethylene (ePTFE) fabric membrane that is air permeable, waterproof, durable and lightweight. The Fabrics unique composition allows it to perform its functions at the highest level. The fabric provides HEPA-quality particulate filtration, reduces condensation and moisture build-up and provides excellent UV and wind protection.

What makes it special? The three-layer fabric combines several benefits into one single material, which means the fabric works hard, allowing us to create covers that do more. In the middle is ePTFE, the magic membrane that keeps moisture out and lets water vapor escape.

The proprietary benefits of Cocoon and ePTFE:

First, it keeps water out.

Cocoon fabrics provide waterproof protection, in some of the most extreme conditions out there.

Second, it lets moisture out.

Condensation under the cover can do just as much damage as water getting in from the outside. The fabrics unqiue composition allows millions of tiny pores to breathe, letting water vapor out.

Third, it protects from particulates.

Sand, dust, dirt, and the sulfurs and salts they carry can not sneak in through durable ePTFE, which filters to .3 microns.

Cocoon covers prevent:


The patented fabric is waterproof and highly breathable, allowing moisture to escape which eliminates the microclimate that causes corrosion.

Mold and Mildew

Eliminates the conditions that can lead to the growth of mold and mildew.

Temperature Extremes

Wide temperature swings are preventable with a fabric that relfects UV and that does not allow heat to be trapped.


Fine sand, dirt and dust can not penetrate the membrane and the face material is tested against windscreen abrasion.

UV Damage

Protects the covered asset from UV damage while the cover itself stands up against UV damage.


Keeps chemicals out, including damaging salts and sulphurs.


Prevents ice buildup.

Our three-layer fabric combines several benefits into one single material, allowing us to create covers that do more.