EN 352-1 CE , Material: ABS, Sizes: S, M, L, H = 29 dB, m = 23 dB, L = 17 dB, SNR = 25 Db, Ear muff for Climax 5-RS, 5-RG and Tirreno safety helmet. 3 cm universal anchorage. Hypoallergenic foam. Height adjustment.