Sleep Waterproof Mattress Protector For California King, White vs Vintage Linen Bed Cover: which is safer?

Where these two actually differ

• We flag PFAS in waterproof coating (fluorochemicals), Polyurethane coating degradation and leachates, Volatile organic compounds (VOCs) and off-gassing and Microplastic/fiber shedding into bedding on the Casper and not on the Parachute.
• 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 Casper.
• The Casper is Polyurethane waterproof backing/coating (composition unspecified) where the Parachute is 100% linen, no reported coating, 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 Casper grade, at 35% confidence against 82%, because it discloses less.