We make no representation or warranty as to the effectiveness and quality of these items. Nothing homemade will ever compare to medical grade PPE. By accepting and wearing these items, you acknowledge, understand and accept the risks associated with wearing these items over medical grade PPE and hereby waive any and all claims with respect to the effectiveness and quality of these items. Overuse, improper use, or extended continuous use may decrease the effectiveness of these items. These are non-clinical fabric masks made entirely by volunteers and are not for commercial sale.