The filters are basically adhesive stickers that you apply to the lens of your flashlight.
You can remove and re-apply one 6-10 times before it will begin to break down. Filters are
sold wholesale in rolls of 500. We have added the "individual filters" selection for anyone
unable to locate a retail location in their area. If you purchase individual filters from this site we encourage you to show them to the retail shops on or near the beaches you visit.
With your help we can begin to reduce light pollution on nesting beaches.