Feature:1. ABS shell is excellent in impact resistance, heat resistance, low temperature resistance, chemical resistance and electrical performance.2. The outer earmuffs is tough and wear-resistant, and the painting process is more textured.3. Synthetic foam liner design with PVC cushion reduces the pressure on the ears, perfectly fitting your face for good sound insulation.4. Arched head band design, with a comfortable PVC cushion, has a good slow rebound effect. It is comfortable to wear, and has a good fixing performance.5. Commonly applicable to construction sites, factories, F1 racing cars, processing workshops, airport docks, etc.6. The telescopically adjustable iron hoop on both sides can adjust the position of the earmuffs freely, to ensure the wearing comfort of the head band.7. This earmuff passes the international standard, SNR: 33dB, NRR: 26dB, can realize effective noise reduction in different environments.Specification:Condition: 100% Brand NewItem Type: Noise-Proof EarmuffMaterial: ABS+PVCColor: As Pictures ShownFunction: Noiseproof, SoundproofRange of Use: Hearing ProtectionSNR: 33dbNRR: 26dbApplication: Commonly used in construction sites, factories, F1 racing cars, processing workshops, airport docks, etc..Package List:1 x Noise-Proof Earmuff1 x Instruction