... FULL PROTECTION AND THE CORRECTMAINTENANCE OF YOUR EARMUFFS.CAUTIONThe EF6011 hearing protector must be put on, adjusted, cleaned and maintainedin ... fi rmly against the head,taking care there aren’t impaired by eye glasses, ear rings, hats, hairs, etc. IMPORTANT ... .Improper selection, use or maintenance may lead to serious hearing loss.GUARANTEEThe guarantee does not cover damage caused by misuse ...