Features Contoured T-shaped earplugs are slightly flattened at the end to provide a gripping point for handling and insertion. Disposable/ Reusable / Disposable Noise Reduction Rating NRR / 30 dB Insertion Method / Roll-Down Metal Detectable / No Earplug Color / Green Earplug Material / Foam Earplug Shape / Contoured-T Earplug Size / M Cord Options / Uncorded Pairs per Package / 200 Earplug Packaging / Bulk Box Earplug Pair Pack Type / Plastic Bag Series / Max Lite(R) Standards / ANSI S3.19-1974 Tested