3m 1100 earplugs snr 37 db 2 pairs 3m xa007703631 the 3m 1100 earplugs snr 37 db 2 pairs have been designed using soft hypoallergenic pu foam material to provide maximum comfort and low pressure inside the ear their smooth dirt resistant surface provides better hygiene durability and comfort while the tapered design fits most ear canals making the plugs easier to use a polyester cord 3m 1110 helps to remove the plugs after use to prevent their loss 3m xa007703631 1100 earplugs snr