For HMT-1 and HMT-1Z1. Intrinsically safe (IS approved) for use with the HMT-1Z1 in hazardous locations.
The Rear Pad is the standard cushioned pad that comes with the HMT-1 and HMT-1Z1. It attaches to the interior band of the device. With regular use, wear and tear of the pad is normal and it is designed to be replaced periodically.