The product, WASHABLE Filter for MAC-1X Helmet Pumper, is designed for continuous racing and is effective in large silt beds. Perfect for long-distance races like Mint 400, Vegas to Reno, and Baja. The Green Filter, hand-built from top-quality materials, has multiple defense layers against dirt. With a multi-layer breathable media and unique filtration technology, it offers superior filtration, capturing even the tiniest particles that ordinary cotton-gauze inperformancein filters cannot. Durable and built to last, the filter body is 100 percent washable and reusable. The filter is suitable for MAC-1X Pumper.