Lastolite Hilite Softbox 1.8 X 2.15m
By rear lighting the white background itself there is no longer a need to use a background light behind the subject. Furthermore, because the background is actually illuminated it means the subject can stand virtually right in front of it without casting a shadow.
The HiLite backgrounds also works as a large rear softbox and illuminates the subject as well, meaning you can use just one other flash head or Led light to illuminate the HiLite to use it as a large wall of light. What's more, the whole thing is collapsible.