No two faces are the same. That is why each Nanoknit Mask pack comes with two pairs of earloop adjustable rings to give you the perfect contour to your face.
This pack comes with four additional rings (mask not included) to adjust your Nanoknit mask.
Please note: Nanoknit is not designed for medical applications. For health and safety reasons, all face masks and filters are not eligible for exchange or refund.