Vintage Linen Bed Cover vs Jersey Soft Fitted Mattress Cover Protector: which is safer?

Where these two actually differ

• We flag Azo dyes or heavy metal pigments, VOC off-gassing or odor and Mildew or mold growth if damp on the Parachute and not on the Mainstays.
• We flag Undisclosed waterproof coating chemistry (possible fluorochemicals/PFAS), Volatile organic compound (VOC) off-gassing from waterproof coating, Coating degradation and microparticle shedding and Contact dermatitis or allergic reaction from coating chemicals or residues on the Mainstays and not on the Parachute.
• The Parachute is 100% linen, no reported coating where the Mainstays is Jersey knit with waterproof coating (unspecified), which is most of the difference in these two grades.
• The gap is 45 points, wide enough that this is not a close call, and the Parachute is the one to buy.
• We are less certain about the Mainstays grade, at 35% confidence against 82%, because it discloses less.