This is the Cokin Nuances Extreme Smart Kit for the P-Series. It features three different filter types that allow you to experiment and be creative in your long exposure photography. It is this creativity that makes for classic, detailed and dramatic landscape and water photography. The filters themselves are made from hardened tempered Schott optical glass that has been proven to be four times stronger than the previous versions. This newly designed hardened glass means that you can have safely travel with your filters as well as expose them to extreme conditions which include inevitable drops and scratches that are bound to happen.