NÚT CHỐNG ỒN 3M-1100

3M FOAM EARPLUGS (1)NRR=29 dB (2)Disposable type (3)Smooth, dirt resistant surface for hygiene. * Specification : The ear comfortably *Smooth, dirt resistant surface for hygiene *Comfortable for a wide range of ear sizes *Hypo-allergenic material *Bright orange color for visibility *Can be combined with ear muffs for additional protection *Can be used with other personal protection equipment *Recommended for moderate noise (up to 100 dBA TWA).