Designed for use with or without a ceiling to soften the light. Enables photographer to transition from horizontal to vertical format effortlessly without having to adjust the Quick Bounce on the flash. Unique design has doors that can be opened to allow 80% ceiling bounce while allowing 20% of the lights to bounce off the remaining surface area to provide fill light. When there is no ceiling to bounce the light (or the ceiling is too high or colored) the doors would remain closed and 100% of the light would bounce off this surface area. Soften shadows and reduces red eye. Ideal for event and wedding photographers