We highly recommend washing and hanging drying the mask before first use. 

Disclaimer:

The cover is not intended to act as a medical device or other medical product, and should not be used as a replacement for conventional and approved personal protective equipment, including surgical masks or respirators. No warranties, either express or implied, are hereby given that the cover will prevent infection or the transmission of viruses or diseases. The cover is not a substitute for professional medical advice, diagnosis or treatment. If you have any specific questions about any medical matter, you should always consult a doctor or other healthcare provider.

This item is final sale and non-returnable.