Lightweight and easy to transport, the Tabletop V-Flat Medium from V-Flat World is designed to help photographers control and shape their lighting. This 4-pack comes with two black boards and two white boards, and each board opens to 20 x 35-inches and folds down to 20 x 17.5-inches. White boards are generally used to reflect light, and black boards to block it. V-Flat World makes their boards in the USA.