Open-cell polyurethane foamUse in conjunction with stock air filter to trap larger particles and debrisDimensions: 11” x 12” x 3/4”Easy cut to fit for any air boxExtends filter life, and cleaning intervals of stock air filterCan be oiled like stock filter for best performanceKeeps mud from packing next to foot pegs, brake and shifter controlsAlso can be used to displace mud on helmet visor in muddy conditionsMade in the U.S.A.