Flaxstic Compostable Phone Case vs FlexQuartz MagSafe Compatible Case: which is safer?
Flaxstic Compostable Phone Case is our pick, better on PFAS and on the overall hazard picture.
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
Tech21
FlexQuartz MagSafe Compatible Case
PFAS grade
Excellent 85/100
Overall grade
Excellent 77/100
Verdict
Buy
Hazard flags
⚑ 2
Material
Thermoplastic polyurethane (TPU)
Confidence
42%
PossibleVolatile organic compound (VOC) off-gassing
PossibleCoating degradation or adhesive breakdown
Where these two actually differ
- We flag Coating degradation and durability over time and Allergic contact dermatitis from plant fiber or resin on the Pela and not on the Tech21.
- We flag Volatile organic compound (VOC) off-gassing and Coating degradation or adhesive breakdown on the Tech21 and not on the Pela.
- The Pela is Flax fiber and plant-based resin blend, compostable where the Tech21 is Thermoplastic polyurethane (TPU), which is most of the difference in these two grades.
- We are less certain about the Tech21 grade, at 42% 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