The NiSi 72mm True Color Pro Nano Cpl Circular Polarizing Filter is designed to reduce glare and reflections from non-metallic surfaces, increase saturation and vibrancy in the sky and foliage while ensuring true color reproduction is at its best by eliminating the warming effect that many polarisers create. This set contains NiSi 72mm True Color Pro Nano Cpl Circular Polarizing Filter, and Limited 1-Year Warranty.