Sleep Essential Mattress Topper vs Premium Mattress Topper: which is safer?
Helix Premium Mattress Topper is our pick: better on PFAS and on the overall hazard picture.
Casper
Sleep Essential Mattress Topper
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleVolatile organic compound (VOC) off-gassing
LikelyMicroplastic shedding
PossibleFlame retardant additive unknowns
Our pick
Helix
Premium Mattress Topper
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleVolatile Organic Compounds (VOC) off-gassing from polyurethane foam
PossiblePolyester cover degradation and microfiber shedding
PossiblePolyurethane foam degradation and chemical leaching with age
Where these two actually differ
- We flag Volatile organic compound (VOC) off-gassing, Microplastic shedding, Flame retardant additive unknowns and Moisture and mold accumulation in use on the Casper and not on the Helix.
- We flag Volatile Organic Compounds (VOC) off-gassing from polyurethane foam, Polyester cover degradation and microfiber shedding, Polyurethane foam degradation and chemical leaching with age and Water-resistant coating composition (undisclosed) on the Helix and not on the Casper.
- The Casper is polyfoam/polyurethane foam topper where the Helix is polyurethane foam, polyester cover, which is most of the difference in these two grades.
- These two are level, close enough that price and fit should decide it rather than our grade.
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