MAX® pre-shaped foam earplugs feature the highest NRR rating available. Plus, their smooth, soil resistant skin stands up to humidity and varying temperature conditions to provide superior user comfort and keep foreign material from getting under the surface while rolling prior to insertion. The foam material rolls extremely small and expands for a custom fit and excellent attenuation. Tapered for easy insertion and removal from ear canal, the highly visible coral color makes compliance checks quick and easy. MAX® earplugs are non-irritating and non-allergenic for sensitive wearers. NRR 33. Meets ANSI S3.19-1974 standard.