This Softbox is sized 45x45cm. It comes with two diffusers and a speedring - please specify which flash system you are using. Softboxes, in general, are an easy to transport and durable light tool often used as the key light. Our softboxes come in all shapes and sizes to provide shaping control efforthless. They have a deeper shape, a recessed front, front and inner removable diffusers, and a highly reflective silver interior. We also have soft grids for every size and type.