what are these things called ?

[Anwar]

the black things that are covering the light from spilling into the back drop .. you can really see it at 2:38 , the light to the left also has an aluminum foil-ish one as well .. i forgot what they are called , can somebody please refresh my memory ? thanks ! :thumbsup:

http://www.youtube.com/watch?v=x-w64v_ihG0

 

[Noel Evans]

Black wrap or cinefoil. I use Rosco. https://www.rosco.com/FTVP/cinefoil.cfm