Includes Range Muffs with NRR (Noise Reduction Rating) of 22dB; Sport Glasses with high grade polycarbonate lens which offers maximum UV protection; and foam ear plugs with NRR (Noise Reduction Rating) of 31dB. Hang packaged. Walker's Game Ear products were developed for the outdoor market by designer Bob Walker, who is a hearing health care specialist and also an avid outdoorsman. He has utilized his knowledge of the human hearing process to provide products which offer sound amplification plus hearing protection. Field tested and recommended by NAHC.