No-Toil Air Filters are built with the highest quality materials to ensure that they are long-lasting. Made with the finest dual-stage, flame-laminated foam to effectively stop dirt, and a high strength glue. Features: No Toil manufactures the world’s best 2-stage foam air filters. Using only the best flame-laminated dual-layer foam bonded with the highest quality glue, they hand-make each foam filter to stand up to the roughest and toughest of any style of riding or terrain. These filters, used with No-Toil foam filter oil, provide the best air filtration system in the world!