Face mask 2.0 has filtering capability over 85% which is close to a mask that fulfills medical criteria. It is made of Finnish non woven fabric. Mask can be reused and washed at least 10 times.
Face mask 2.0 comes in 10 pcs package but also 5 pcs which is available here.
Mask is a hygiene product so it doesn't have return guarantee.
Note that this mask is not a PPE and it doesn't give protection to for example corona virus. Mask is not CE approved.
Wash mask after every use in 90 degrees. The more ecological option is to boil it in hot water and washing liquid for 5 minutes.