1. Affordable hearing protection.High levels of exposure to noise may result in noise-induced hearing loss. Our tested foam earplugs is one of the best premium qualities in the market, it will help blocking most of the harmful external elements likenoises and cold. It is recommended forwork, flying, sleeping, racing, skiing ,shooting placeand so on. 2.Certified product.Our earplugs are certified and tested. Certified byCE(European Conformity),ANSI(American National Standards Institute). Tested byPZT INSPEC, NVLAP. 3.Quality at its best.Our earplugs is made ofnon-toxic, dense, soft, premiumfoam or Silicone , it is intended for professional as well as personal use. Its bell shape helps block most of the noises and seal the eardrums.