Unfortunately, the spectacle was leaking with me. Under the nose has occurred continuously slow water. At first I thought VLT. it is up to the 3 day beard or face shape, but I have lent my colleagues and this had the same experience -> Not close. Vlt I was unlucky and had caught a bad model. Amazon has as always withdrawn the goods without objection, so kudos to Amazon, but unfortunately I was disappointed by the spectacle at the price ...