These Razor X-TRM Electronic Low-Profile Muffs feature an upgraded Tacti-Grip silicone composite headband that provides a comfortable and secure slip-free fit in dynamic shooting scenarios and gel-filled ear pads for prolonged use out in the range or field. These 21dB NRR electronic muffs provide Walker's tried and true hearing protection with lightning fast 0.02 sound-activated compression using two hi-gain omnidirectional microphones that are low noise and tuned for natural sound clarity.