Seymour Solar makes the finest, yet most-affordable solar filters we’ve ever tested- starting at just $99.95 a pair. Their Helios thin-film has a consistent yellow-orange solar image, with higher contrast than competitor’s filters. For binoculars capable of magnifications greater than 25x (our XL Series), we also offer Seymour Premium Glass filters, for highest-possible resolution. The glass filters are recommended when doing photography using an Oberwerk Smartphone Adapter or Novagrade Smartphone Adapter. For 25x or less the Helios film filters are all you need. Our Seymour filters come with felt tape added to the inside of the aluminum cells, custom-fit for each model, for a snug slip-on fit. For the 25/40×100 Long-Range Observation binocular, the felt is on the outside of the cell in order to snugly fit the inside of the glare-shield area. Choose your binocular model from the pull-down list. All filters meet ISO 123112-2 requirements. No returns accepted for solar filters.