This Octa Softbox with Bowens Speed Ring and Grid from Godox measures 31.5" and provides a soft, pleasing quality of light. The softbox has a large surface area to offer a wraparound effect, especially when used close up. This shape produces natural-looking catchlights in the eyes of your subject. The included fabric grid mounts to the softbox with touch-fasteners and provides directional control of the output, keeps light from the background, and allows you to light specific areas of the subject.