One of the oldest and still most popular means of lighting a set is by taking a reflective surface and redirecting sunlight or artificial light exactly where it is needed.
The "hard" side of the reflector will reflect the light almost exactly as it hits the board, while the "soft" side will soften the light as it redirects it.
This honeycomb reflector is lightweight and measures 40" x 40" (102x102cm).
The "soft" side has a stippled silver material, while the "hard" side has the shiny silver paper glued to it.