Grid is made of black special fabric, with honeycomb-style design and paste sewn around the sides, can be respectively fastened to the inner side of the 20" / 50x50cm softbox. Use a grid on the softbox to control light overlap and tighten the total coverage area. The grid allows you to have more directional control over the output while remain soft, uniform quality. The grid is extremely simple to fit using the paste strips on the inside of the softboxes.the nylon fabric construction also makes them a very durable and lightweight accessory. Suitable for special portraits or products shooting, resulting in a different light and dark raster effect. This listing is for the Honeycomb Grid Only. Softbox and Light are NOT Included.