What is the difference between this FFP2/KN95 mask and the FFP2 mask on your site? Are FFP2 and KN95 two different kinds of masks? If so, are there two masks in this package?

JHi, Thank you for your question. There is a negligible difference between the European-certified FFP2 face masks, the American-certified N95 face masks and the Chinese-certified KN95 face masks. According to the requirements that regulate their technical characteristics, the KN95, N95, and FFP2 masks all have identical levels of filtration: all three have a filtration capacity above 94 percent. Here is the specific certified filtration capacity for each of the three types : FFP2 face masks: 94% filtration capacity N95 face masks: 95% filtration capacity KN95 face masks: 95% filtration capacity These masks are sold individually and contain 1 mask per pack.