The Harrison Classic Dark Cloth is a large focusing cloth that can be used for 4×5 up to 11×14 (and panoramic) view cameras. The hook-and-loop along one side insures a snug fit around any size of bellows. The silver fabric outside will keep you cool while focusing and is waterproof. The black fabric inside is a soft lint-free synthetic fabric. The large provides enough room around you and the camera back to keep things dark while focusing.