DeWalt’s DPG660-D dielectric cap-mounted earmuffs feature a metal-free construction for use around electrical hazards. The NRR 25-dB rating offers protection in moderate- to high-noise environments, and it has extendable and foldable arms for an adjustable fit.

MSA Safety’s Supreme Pro earmuffs protect against hazardous noises while enabling users to hear surrounding sounds. There is a waterproof battery compartment and well-shielded microphones for sound direction location. They are available with either a foldable headband or a neckband.

Studson’s Ear Defender muffs come standard with a 30 mm universal attachment that slides and clips into place on a helmet’s side rail. The noise-reduction rating is 24 decibels and meets ANSI S3.19-1974 noise-reduction standards. It is adjustable to fit over all ears. 

3M’s Peltor X4 earmuffs feature a noise-reduction rating of 25–27 dB. It has a low-profile cup design for compatibility with other PPE. The cup angles to help create a customized fit for the worker. It can be used as over-the-head hard hat attached and behind-the-hat models.

Klein Tools’ 60502 hard hat earmuffs feature soft foam ear cushions for an acoustic seal and all-day wear. Pivot positions on the earmuff connector allow for in-use, standby and storage positions.