The Sightmark P4 Tactical Flashlight Filters - 1in, Red, Blue, Green SM73001-003 provide added benefit for a multitude of scenarios, ensuring that no shooter is caught unprepared. with the red Lens Filter from the experts at SightMark, shooters can spot game without fear of being detected by their prey and when used in conjunction with night vision, the red filter also improves night vision visibility at greater distances. The blue filter, included with the Sight-Mark Multi-Colored Flashlight Lens Filters, proves a vital tool for highlighting blood trails when tracking wounded game ensuring maximum visibility. Finally the green lens that comes with this Sightmark Flash Light Filter, protects the shooter's night vision when map reading, especially in situations that require less light intensity. For a great way to take night vision to the next level, choose the Sight Mark Red, Green and Blue Tactical P4 Flashlight Lens Filters.