Liberty DuraPlug Corded Disposable Foam Earplug with 32 dB NRR, Orange (Case of 100 Pairs) Super-soft, slow-recovery tapered shape foam for easy insertion and removal High visibility color plus bright color cord make compliance checks quick and easy Low pressure, self-adjusting foam offers long wearing comfort and quick recovery time Noise reduction rating (NRR): 32dB Comply to ANSI S3.19