Make sure you got clean underwear, she always said, in case you get in an accident & I always figured that'd be the least of my worries, but now I'm older & I see there's a lot you can't control & some you can control & clean underwear is one of those you can. For the most part.
Archival, acid-free 100% cotton paper.
Low-VOC foamcore backing and protective poly sleeve.
Frames are black-painted wood with glass.