I ordered this product, so that I can save space and carefully stowed and transported multiple filters in a photo backpack or camera bag. A filter with a diameter of 77mm fits easily into one of the compartments. One can in and get back out it easily, without the danger of scratching is. Also to store the Filter Pouch B4 is well suited. The material makes a high-quality impression, as might be expected from the company B + W. Who does not want only one filter, but more to take, for the Filter Pouch can be very useful.