QuartzLine filters are made of 99.9% pure quartz glass for unmatched durability and optical clarity. The oversized brass filter frames operate smoothly and are designed to withstand even the harshest adventures. With optical coatings for a hyper-neutral color profile, nearly perfect transmission, and multi-coatings for enhanced scratch resistance, water resistance, anti-reflective properties, and reduced vignetting in wide-angle shots, QuartzLine filters allow content creators to showcase lifelike colors. Each filter includes a microfiber lens cloth, a soft filter pouch, and a filter case.