Klein Tools’ AESBH1 Bluetooth behind-the-head earmuffs can be worn comfortably with hard hats and caps. Earmuff cups pivot to rest around the neck when not in use. The angled soft foam cushion offers an acoustic seal and has a rechargeable 750-mAh battery to last more than 70 hours on a single charge.

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.

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.