ToughSack Assorted Colors vs Pro Zip Duffel: which is safer?
Granite Gear ToughSack Assorted Colors is the clear pick. SealLine Pro Zip Duffel carries a failing PFAS grade, and we never recommend buying a failing product.
Our pick
Granite Gear
ToughSack Assorted Colors
PFAS grade
Excellent 85/100
Overall grade
Excellent 81/100
Verdict
Buy
Hazard flags
⚑ 1
Material
Cordura nylon fabric
Confidence
72%
PossibleHeavy metals in zippers or hardware
SealLine
Pro Zip Duffel
PFAS grade
Poor 40/100
Overall grade
Poor 26/100
Verdict
Skip
Hazard flags
⚑ 2
Material
Waterproof coated nylon or polyester duffel
Confidence
42%
PossibleCoating degradation over time
ReportedUndisclosed waterproofing chemistry (including potential PFAS)
Where these two actually differ
- We flag Heavy metals in zippers or hardware on the Granite Gear and not on the SealLine.
- We flag Coating degradation over time and Undisclosed waterproofing chemistry (including potential PFAS) on the SealLine and not on the Granite Gear.
- The Granite Gear is Cordura nylon fabric where the SealLine is Waterproof coated nylon or polyester duffel, 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 Granite Gear is the one to buy.
- We are less certain about the SealLine grade, at 42% confidence against 72%, 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 bags & luggage, see the full ranking