Flaxstic Compostable Phone Case vs FlexQuartz MagSafe Case for iPhone 17 Pro: 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 Case for iPhone 17 Pro
PFAS grade
Excellent 85/100
Overall grade
Excellent 77/100
Verdict
Buy
Hazard flags
⚑ 2
Material
Thermoplastic polyurethane (TPU) blend
Confidence
35%
PossiblePhthalates in TPU blends
PossibleAllergen sensitivity to TPU or additives
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 Phthalates in TPU blends and Allergen sensitivity to TPU or additives 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) blend, which is most of the difference in these two grades.
- We are less certain about the Tech21 grade, at 35% 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