- The world's most-used polyurethane foam earplug
- Bell shape delivers maximum in ear comfort
- Contoured design easier to insert, resists tendency to back-out of ear canal
- Polyurethane foam enhances comfort, especially for long-term wear
- Smooth, soil-resistant closed cell-foam skin prevents dirt build-up                          - 500 per Box                                                                                                              - NRR: 33 dB