protective earplug

protective earplug Description Noise is reduced rate (NRR) 33 decibels The world the most widely used in PU foaming earplugs Bell type design, guarantee the wearing of comfort Design improvement, more convenient and easy wear off [usage] to improve sleep, concentrate, protect listening etc. Are you at home, bedroom, self-taught classroom, bus trip, factory, ship building site, bustling downtown and noise from the good helper, is your new healthy life good partner, and you see F1 match. For! [efficacy] noise is reduced NRR rate (33), the highest number of db decibel the earplugs. Bullets type outline design, smooth surface, the antifouling processing, wear health, safety, soft and comfortable, sound insulation effect is good. The instructions. 1, use forefinger and thumb plugs, its rub the fine linen (better), 2 and the other hand into the ear up to mention it (to) and hold the key, then will rub fine earplugs round head toward the ear, into one, Three, use hand in the ear plugs until earplugs completely inflation to finalize the design (about 30 seconds to continue. [note] 1, due to recover the flexibility of earplug soon, so users to determine by ear plugs into the former was rubbing or inability to achieve the best effect, 2, remember that in the ears, ear before fitting is up to pull up, can achieve the best after inflation earplugs effect, 3 please keep hands, clean, 4 when it slowly, mild, pull, not overexert.