The earplugs are made of soft, pliable silicone, tested according to EN 352-2:2002 & ANSI. SNR 32 dB, SLC(80) 24 dB & NRR 26 dB.
Three-layer Christmas tree structure allows the ear plugs to gently confrom to the shape of the ear canal. They are designed with an inner air cushion and triple flanges, which are not only comfortable, but also provide an effective seal even with head and/or jaw movement. 
Waterproof and moisture-proof, preventing sweat from flowing into the ear canal.

With 65cm length string cord, convenient for hanging plugs around your neck in environments where noise comes and goes. 

Washable and reusable

Remove earplug slowly with twisting motion to gradually break the seal.  Due to the excellent seal characteristics, rapid removal may damage eardrum.  Do not pull cord to remove from ear.  Do not push earplug into ear so far that you are unable to easily grasp the stem with thumb and forefinger.  Remove cord from earplugs (with firm tug) before using for activities where there is a risk that it may get caught up during use.  Use only as directed. The polybag and or earlugs may present a choking hazard, keep it away from children.