- Silverline earmuffs designed to protect hearing in high-noise environments - SNR attenuation level 27 dB, suitable for workshops, construction sites, and industrial use - Certified according to EN352:2002 standard for maximum safety - Provide different levels of protection: A=30 dB, M=25 dB, B=18 dB - Model 633815, lightweight and comfortable for prolonged use - Recommended for DIY tasks, carpentry, and occupational risk prevention