This lightweight Scan ear defender is suitable general purpose. It is effective in reducing noise levels, whilst still allowing the wearer to hear normal conversation. The soft and wide PVC ear cushions enhance comfort, and the adjustable cup height is designed to fit the majority of wearers. The defender is foldable for easy storage. This ear defender has a Single Number Rating (SNR) of 25, meaning it will reduce noise by 25 decibels (db). Conforms to EN352-1:2002.