Because of its unique and organic composition, cotton is the ideal material for use in high performance air filters. But beyond the mere use of the material, Cobb High Performance Air Filters are uniquely designed to take full advantage of cotton's capabilities.
Unlike multi-layer gauze filters which can fray and release fiber particles into your engine, Cobb air filters use two layers of tightly-interwoven cotton fabric. The 3 main benefits to woven cotton are the fact its thinner, holds oil better, and is stronger. Since its thinner, it allows better air flow without sacrificing filtration. The cotton holds the oil more evenly, and the medium is much stronger. Unlike gauze, you cannot wear a hole in woven cotton by rubbing it, and there is no way small bits of cotton can rip off since its interlocked with another piece.
Cross weaving one fine, and one medium layer, produces a fabric that is thinner and stronger than other materials and has the ability to trap dirt up down to 5 microns. The result is better airflow without sacrificing filtration. And because the fabric is so durable, they can be washed and reused over and over, which allows us to give it a lifetime guarantee.
Cobb air filters are coated in steel mesh for extra strength and durability, because of this, Cobb filters are much more dent resistant.