First Defense Nasal Screens are the first ever non inserted, hypo-allergic, USA made, that offer you discrete but effective protection against dust, allergens and even contagious viruses such as flu.
Benefits:
✓ Easy to use and discreet
✓ Safe and Hypoallergic
✓ Block viruses and bacteria
✓ Block dust and allergens
✓ Made and patented in the USA