The beauty about this set is the ease and simplicity of use. It is not only one of our most cost effective flash set-ups, the quality is unmatched in the industry. With 3 45with s Flashes, you will be taking professional photos in minutes. With the built-in slave, the flashes automatically fire as soon as it sees the first one-this is accomplished by the use of built in Optical slaves. Features(2) Silver/Black Umbrellas(2) Standard Umbrellas(3) Light brackets with Umbrella Holders(3) Premium Grade Synch Flashes (45 with s)(3) Premium Light StandsSuperior quality, pressure die-cast aluminum constructionAn exceptionally strong, yet lightweight stand4500 Professional Quality Photography Studio Lighting Umbrella Soft Light KitSpecificationsWeight: 14 lbs