The green Filter Adapter from Fenix is easy to attach and remove, and requires no modification to your flashlight. The filtered light protects night-adjusted vision, and green light compliments night vision devices, and provides better contrast than blue or red light for reading or navigating at night. Made of PC2805 polycarbonate, it is temperature and impact resistant. This filter is compatible with Fenix PD35, PD12, and UC40 flashlights. It comes ready-to-use in clamshell packaging.