Vintage Linen Bed Cover vs Cool Nites Zippered Waterproof Mattress Encasements: which is safer?
Parachute Vintage Linen Bed Cover is the clear pick. Serta Cool Nites Zippered Waterproof Mattress Encasements carries a failing PFAS grade, and we never recommend buying a failing product.
Our pick
Parachute
Vintage Linen Bed Cover
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleAzo dyes or heavy metal pigments
PossibleVOC off-gassing or odor
PossibleMildew or mold growth if damp
Serta
Cool Nites Zippered Waterproof Mattress Encasements
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossiblePolyurethane off-gassing and VOC emissions
PossibleWaterproof coating degradation and leachables
PossibleMold and bacterial growth if moisture traps
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 Serta.
- We flag Polyurethane off-gassing and VOC emissions, Waterproof coating degradation and leachables and Mold and bacterial growth if moisture traps on the Serta and not on the Parachute.
- The Parachute is 100% linen, no reported coating where the Serta is Polyurethane/polyester blend with waterproof 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 Serta grade, at 42% confidence against 82%, because it discloses less.
Both products run through the same public rubric: materials, coatings, brand disclosure, lab findings, and recalls, plus a beyond-PFAS hazard analysis. Grades are model-based estimates, not lab tests. How grades work →
More mattress protectors: see the full ranking