Vintage Linen Bed Cover vs Elite Double-Sided Waterproof Mattress 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 Protect-A-Bed.
• We flag Waterproof coating composition (fluorochemical or polyurethane), Polyurethane off-gassing (volatile organic compounds), Coating degradation and microparticle release and Adhesive or sealing compounds between layers on the Protect-A-Bed and not on the Parachute.
• The Parachute is 100% linen, no reported coating where the Protect-A-Bed is Polyurethane or polyester fabric with waterproof/stain-resistant coating (type 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 Protect-A-Bed grade, at 35% confidence against 82%, because it discloses less.