Check Case for iPhone 17 vs Flaxstic Compostable Phone Case: which is safer?
Flaxstic Compostable Phone Case is our pick, better on PFAS and on the overall hazard picture.
Mophie
Check Case for iPhone 17
PFAS grade
Excellent 85/100
Overall grade
Excellent 77/100
Verdict
Buy
Hazard flags
⚑ 2
Material
Polycarbonate plastic shell, microfiber interior
Confidence
62%
PossibleMicroplastic shedding from microfiber interior
PossibleDegradation and brittleness over extended time
Our pick
Pela
Flaxstic Compostable Phone Case
PFAS grade
Excellent 100/100
Overall grade
Excellent 92/100
Verdict
Buy
Hazard flags
⚑ 2
Material
Flax fiber and plant-based resin blend, compostable
Confidence
92%
PossibleCoating degradation and durability over time
PossibleAllergic contact dermatitis from plant fiber or resin
Where these two actually differ
- We flag Microplastic shedding from microfiber interior and Degradation and brittleness over extended time on the Mophie and not on the Pela.
- We flag Coating degradation and durability over time and Allergic contact dermatitis from plant fiber or resin on the Pela and not on the Mophie.
- The Mophie is Polycarbonate plastic shell, microfiber interior where the Pela is Flax fiber and plant-based resin blend, compostable, which is most of the difference in these two grades.
- We are less certain about the Mophie grade, at 62% confidence against 92%, because it discloses less.
Both products run through the same public rubric, which covers 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 waterproof phone cases, see the full ranking