Features Ultra light and compact ear muff Adjustable length for a secure and comfortable fit 100% metal free CE certified CE-CAT III AS/NZS 1270 (SLC(80) 28dB - Class 5) UKCA marked Retail bag which aids presentation for retail sales Individually packed for vending machines Standards EN 352-1 (SNR 28dB) ANSI S3.19 (NRR 22dB)