It's been a while since I hesitated between several brands to choose a filter holder for ND and GND filters. I took advantage of a flash sale to purchase this kit. I'm not disappointed. The whole thing seems sturdy and easy to store. The case, quite pretty, has 5 compartments, 3 of which, for square ND filters, can be lifted using a ribbon. On the back of the case, there is a ring for passing a strap and a belt loop. I would have liked a slightly more spacious compartment to accommodate the adapter rings with the CPL filter when it is disassembled. The assembly (or disassembly) of the elements is well explained in instructions in several languages, including French. Main positive points: No color cast, nor loss of sharpness on the first tests carried out. The plastic frame with its tabs for handling the ND filters. The system for placing the CPL filter on the filter holder. The knurled button for mounting the adapter ring and rotating the filter holder. The very accessible wheel to control the polarizing filter. The vigorous holding of the square filter on the filter holder. The robustness of the metal filter holder. If we have to find some slightly negative points: Holding the square filter a little too vigorously in the filter holder. The click too strong to lock the CPL filter in the filter holder. No pouch to independently protect the CPL filter in the case.No protective cover for the CPL when the assembly is installed on the lens.