iPhone 17 Pro Max SolidX vs Monarch Pro iPhone 16 Pro Max Case: which is safer?

iPhone 17 Pro Max SolidX is the clear pick. Urban Armor Gear Monarch Pro iPhone 16 Pro Max Case carries a failing PFAS grade, and we never recommend buying a failing product.

Our pick

Rhinoshield

iPhone 17 Pro Max SolidX

PFAS grade

A 100/100

Overall grade

B 88/100

Verdict

Buy

Hazard flags

⚑ 3

Material

TPE/thermoplastic elastomer protective case

Confidence

72%

PossibleVolatile organic compound (VOC) off-gassing

PossibleThermal instability and leaching

PossibleDegradation and microparticle shedding

Why this gradeBuy

Urban Armor Gear

Monarch Pro iPhone 16 Pro Max Case

PFAS grade

F 50/100

Overall grade

F 20/100

Verdict

Skip

Hazard flags

⚑ 4

Material

Thermoplastic polyurethane (TPU) shell, likely with unspecified coatings

Confidence

35%

PossiblePlasticizer leaching (phthalates, adipates)

PossibleUnspecified surface coatings and additives

PossibleThermal degradation and off-gassing

Why this 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 waterproof personal electronics cases: see the full ranking