Function: 1 Once the filter is installed, the storage bag can be folded for easy carrying. 2. It can store various commonly used sizes of round and square filters in a wide range of applications. 3 Excellent workmanship, well protect your lens and easy to classify and discover. 4 Made of high quality nylon waterproof fabric, soft, wear-resistant and durable. 5 Large storage bag has 4 compartments to hold 4 filters at once. Specifications: Item Type: Filter Case Material: Waterproof Nylon Product Color: Black Product Weight: Approx. 1.2 oz (34 g) / Number of Filters for Storage: 4 PCS Package List: 1 x Filter Case