Strongway 9in. Portable All-Weather Portective Storage Case vs K470 Aluminum Storage Case 40845: which is safer?

zarges K470 Aluminum Storage Case 40845 is the clear pick. Strongway 9in. Portable All-Weather Portective Storage Case carries a failing PFAS grade, and we never recommend buying a failing product.

Strongway 9in. Portable All-Weather Portective Storage Case

Storm Case

Strongway 9in. Portable All-Weather Portective Storage Case

PFAS grade

Poor 40/100

Overall grade

Poor 28/100

Verdict

Skip

Hazard flags

⚑ 3

Material

Hard polymer shell with unspecified waterproof coating

Confidence

35%

PossibleUnspecified waterproof coating leachables

PossiblePolymer degradation and oligomer release

PossibleMold or bacterial growth in waterproofed seams

Our pick

zarges K470 Aluminum Storage Case 40845

Zarges

K470 Aluminum Storage Case 40845

PFAS grade

Excellent 85/100

Overall grade

Excellent 77/100

Verdict

Buy

Hazard flags

⚑ 2

Material

Aluminum with rubber gasket/hinges

Confidence

78%

PossibleAluminum corrosion and leaching

PossibleBacterial or mold growth in seal

Where these two actually differ

  • We flag Unspecified waterproof coating leachables, Polymer degradation and oligomer release and Mold or bacterial growth in waterproofed seams on the Storm Case and not on the Zarges.
  • We flag Aluminum corrosion and leaching and Bacterial or mold growth in seal on the Zarges and not on the Storm Case.
  • The Storm Case is Hard polymer shell with unspecified waterproof coating where the Zarges is Aluminum with rubber gasket/hinges, which is most of the difference in these two grades.
  • The gap is 45 points, wide enough that this is not a close call, and the Zarges is the one to buy.
  • We are less certain about the Storm Case grade, at 35% confidence against 78%, because it discloses less.

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 →

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