FFP3 face masks from the Prenger brand are the better quality masks on the market at the moment. Thanks to its barrier, this mask provides protection against the direct transmission of aerosols and respiratory droplets. This transmission is therefore reduced to a minimum. FFP3 masks have an efficiency of at least 99% and the side leakage must not exceed 2%. Prenger's FFP3 face masks have been extensively tested and meet all required requirements. The mask is 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. - Very efficient in supply chain due to the foldability of the mask. - More wearing comfort thanks to the low breathing resistance. This is an advantage compared to many other FFP3 masks when performing heavy exertion. NR: Non Reusable. This mask can/may be used several times during a working day (8 hours) but may not be used afterwards. D: These masks have passed the Dolomite Dust Test. They are more resistant to clogging over time. This reduces breathing resistance, which makes working more comfortable.