Howard Leight's Fusion(tm) reusable earplugs are manufactured using a dual-material molding process to thermally fuse its patented, quadruple SoftFlange(tm) exterior to its rigid FlexiFirm(tm) core. Available in regular and small sizes, Fusion provides easy insertion, all-day comfort, superior attenuation and an NRR of 27. The earplugs come with a detachable cord.Howard Leight Industries, San Diego, CA.