1100 3m, Ear Plugs, Uncorded, 37 dB Noise Rating | Farnell UK
3M 1100 Ear Plugs, Light Weight & Soft Foam for Comfortable Wear, Hearing Protection against noise levels in the range of 94-105 dB (SNR: 37dB), 30 on OnBuy
3M 1100 Foam Ear Plugs | safetecdirect.co.uk
3M 1100 Uncorded ear plugs, Pack of 30 | DIY at B&Q