| CSA Class AL |
| Earcup pivot points tilt for optimum comfort and efficiency |
| Features an electrically insulated wire headband often referred to as "dielectric" |
| New technologies in comfort design and protection all come together in this groundbreaking earmuff line |
| Noise Reduction Rating (NRR)b 28 dB |
| NOTE: The X-Series (over-the-head) headband version is electrically insulated - sometimes referred to as "dielectric" |
| The metal components of the headband have been covered by non-conductive material for use in a low voltage electrical hazard (less than 440 V ac) |
| The wire headband offers consistent pressure over prolonged wearing periods |
| The X3A features a newly designed spacer to help improve attenuation without the need for a much larger cup or double cup design |
| The X-Series earmuffs are 3M's latest advancement in hearing conservation |
| This lightweight earmuff is designed for protection against high-level industrial noise and other loud sounds |