Lightweight and breathable facial masks. These face masks are very comfortable and stylish. One size fits most. This mask is not intended to act a medical device or other medical product, and Niche Enterprises makes no warranties, either express or implied that the mask prevents infection or the transmission of viruses or diseases. The mask is not a substitute for professional medical advice, diagnosis or treatment. If you have any specific questions about any medical matter, you should consult a doctor or other healthcare provider. Please allow 2- 3 weeks for delivery.