This is a Calumet Light umbrella for strobes. It is called The Eclipse. It converts from a bouncing light umbrella to a shoot-through umbrella. The black outer layer is removable so that you can aim your strobe light to shoot through it instead of bouncing light. With the black cover on you can use it as a typical strobe light bouncing umbrella. It has a diameter of 3 feet (36 inches). It is 28 inches in length. This umbrella is in very good condition. It has been lightly used and still works like new. No structure has ever been bent or broken. The white umbrella part is in very good condition with no tears or rips. The black part of the umbrella in in very good condition but does show some wear and a couple scratches. The strap that wraps it up is torn a bit but still works. If you live in the Denver, Colorado area, you can pick this up and I will refund your shipping costs.