Disposable Noise Reducing Rating: 29 decibels Corded for convenience and to prevent loss of earplugs Smooth, dirt resistant surface for hygiene Comfortable for a wide range of ear canal sizes http://www.amazon.in/3M-29DB-1110-Plug-Pack/dp/B00VTNZAXO/ref=gbps_img_s-4_f10f_d1bb0be5?smid=AT95IG9ONZD7S&pf_rd_p=fd168032-7d83-4379-b97e-f39c870df10f&pf_rd_s=slot-4&pf_rd_t=701&pf_rd_i=gb_main&pf_rd_m=A1VBAL9TL5WCBF&pf_rd_r=0FMXXJCV40KNPGK2PZS9
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