Do you think they’re studio made?
They look like they could be Cannon with the logo removed, the cuff seams removed, and a black patch sewn in. So that’s my best guess.
I thought so too. Because in some shots of phoebe’s pads, they look very different compared to the others
They’re definitely Cannon or Playwell (a UK stocked brand of elbow pads). You can see the outline of the hole in the elastic covered by the black patch in some of the behind the scenes shots.