This is Allen Safety Combo Glasses and Ear Muffs NRR 25dB. Foam padded ear muffs, one size fits all. Comfortable padded ear cups. Durable, nearly unbreakable with NRR 25 dB (Noise Reduction Rating). Safety glasses with adjustable temple and soft rubber nose piece. Shatterproof Polycarbonate lens. Blade style lens extends coverage.