3M Peltor Optime 105 Over the Head Earmuff, NRR 30 dB (2 Pack) : Amazon.co.uk: Everything Else
Peltor 3M X5A Ear Defenders with Headband, 37 dB, Black & 3M X2AC1 X2 Earmuff; Ear Defender, Hearing Protection against noise levels in the range of 94-105 dB (SNR: 31dB) : Amazon.co.uk:
3M Peltor Optime I, H510AC1, Ear Muffs Headband, Lightweight Ear defenders, Hearing Protection reduces noise level by up to 27dB, Pack of 1,Yellow : Amazon.co.uk: DIY & Tools
3M H520AC1 Peltor Optime II Comfort Earmuffs, Black, (94-105 dB) & 3M Peltor Optime I Earmuff H510A; Hearing Protection against noise levels in the range of 87-98 dB (SNR 27dB), yellow :