This type of FFP2 facial mask from Prenger is one of the best markers currently available on the market. The mask has a barrier to minimize direct transmission of aerosols and respiratory droplets. FFP2 masks have an efficiency of at least 94% and the side leakage is less than 8%. Prenger's FFP2 face masks have been extensively tested and meet all extremely strict European requirements. The mask is specially designed to make wearing a face mask more comfortable. - Completely latex-free, so people with a latex allergy can wear the mask safely. - Designed so that less condensation occurs when the mask is worn in combination with glasses. - More wearing comfort thanks to the low breathing resistance. This is an advantage compared to many other FFP2 masks when performing heavy efforts. NR: Non Reusable. This mask can/may be used several times during a working day (8 hours) but may not be used afterwards.