The kit includes two translucent umbrellas that are 33 inches in diameter (a fairly standard size), two 45-watt compact fluorescent light (CFL) bulbs, two sturdy aluminum alloy light stands that are adjustable from 30 to 83 inches, and two E26/E27 lamp holders to work with a wide range of bulbs. If you’re going into the field to shoot, rest assured that the light stands break down to an easy-to-pack size but are still a breeze to set up quickly.