MM-1 Style: Pkg Poly Bag, Qty:200 pair per box This item features: -Two-sizes-in-one earplug improves individual fit while simplifying inventory. -Smooth, soil-resistant closed cell-foam skin prevents dirt build-up. -Self-adjusting polyurethane foam expands to fit virtually every wearer. -Noise Reduction Rate (NRR): 31 dB. -Maximum Attenuation @ Frequency: 52.100 dB @ 8000.000 Hz. -Body Material: Foam. -Color: Coral/Yellow. -Type: Uncorded. -Style: Pkg Poly Bag, Qty:200 pair per box - Price is for 1 Pair. -Style: Pkg Dispenser Box, Qty:500 pair per box - Price is for 500 Pairs. Testing and approvals: -ANSI.