Protects and stores cameras, lenses, negatives, slides, and prints! Strong moisture absorption force protects your precious equipment from moisture, mold, rust, and insect bites. It can also be used to prevent moisture from camera bags and aluminum cases. Estimated usage is approximately 7.6 gal (30 L) of space, and it will vary depending on temperature, humidity, and container sealing degree, but it will last about 6 to 12 months. If it absorbs moisture and hardens even before, please replace it with a new one. The outer bag has a zipper, making it convenient for storage. Proudly made in Japan.