Ensure proper hearing protection with lightweight muffs that offer portability and optimum fit. Designed for noise levels up to 95 dBA. Wide liquid/foam-filled ear cushions. When folded, no foreign particles can enter the inner cup. Material(s): Foam; Plastic; Ear Cushion Material: Liquid, Foam-Filled; Noise Reduction Rate (NRR): 21 dB; For Use With: Ear Muff Replacement Hygiene Kit CBTHY6V.