These aluminium nose wires are bendable to fit the shape of your nose. You can slip them in the pocket at the top of your mask to ensure a snug fit and to reduce eye-wear fog. They also feature an iron-on coating on one side. Personally, I prefer to slip them in a little pocket at the top of my mask and then take them out for washing.
These wires are supplied so that you can make simple face coverings for you and your friends/family. No medical research has been conducted in the decision to sell this product. Always consult Government guidelines with regards to best practice safety measures.