3M Peltor X4A Ear Defenders Black / Green 33dB SNR - Screwfix
3M™ Peltor™ X4 Series Class 5 Earmuffs, SafetyQuip Australia Review - YouTube
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