Filter is able to protect down to 0.3 µm and has a three-month use as per manufacturers’ description.
Filter comes with removable, flexible wire to shape around your nose.
These masks have a 100% satisfaction guarantee with them… That means if the ear loops are too short or you need something modified. I am more than happy to replace that mask at no cost to you. Just donate the mask that you have to somebody else and I will send you a new one. Just let me know what modifications need to be done. Thank you and be blessed.