3M E A R Ultrafit Reusable Pre Moulded Earplugs Corded UF 01 000 Box of 50 Trousers High Visibility Trousers PVC Non marking outsole Integrated blowing function for PVC Non marking outsole provides good grip and flexibility Fully water proof liner keeping users feet dry in any condition The unique one size 3M E A R Ultrafit Ear Plug fits most ear canals comfortably and provides an adequate level of noise attenuation SNR=32dB The 3M E A R Ultrafit Pre Moulded Earplugs UF 01 000 are made for the users whose job requires having ear protection on and off so the handyness of a premoulded ear plug is a key requirement