Peltor 3M Earmuffs X4A with Headband–Reliable Protection Against Medium Levels of Noise in Industrial Settings, 33 dB, Green & 3M X2AC1 X2 Earmuff; Ear Defender, Pack of 1, Black/Yellow : Amazon.co.uk: DIY
Peltor X4 Lightweight and Powerful Ear Defenders (-33 Decibels)
3M Peltor X4A Fluorescent ear muffs 35 dB - online purchase | Euro Industry