eVent Sil Compression DrySack vs Trailgate Gear Bin Green 140 L: which is safer?

REI Co-op Trailgate Gear Bin Green 140 L is our pick: better on PFAS and on the overall hazard picture.

Granite Gear eVent Sil Compression DrySack

Granite Gear

eVent Sil Compression DrySack

PFAS grade

Bad 20/100

Overall grade

Bad 0/100

Verdict

Skip

Hazard flags

⚑ 5

Material

Nylon with eVent laminate and silicone coating

Confidence

45%

PossibleNylon polymer degradation and microfiber release

PossibleSilicone coating breakdown and leachables

PossibleLaminate delamination and edge exposure

Our pick

REI Co-op Trailgate Gear Bin Green 140 L

REI Co-op

Trailgate Gear Bin Green 140 L

PFAS grade

Good 65/100

Overall grade

Good 53/100

Verdict

Skip

Hazard flags

⚑ 3

Material

Polypropylene storage bin, no water-resistant coating mentioned

Confidence

78%

PossibleUV degradation and additive leaching

PossibleMicroplastics from mechanical wear

PossibleOdor and volatile organic compounds from manufacturing

Where these two actually differ

  • We flag Nylon polymer degradation and microfiber release, Silicone coating breakdown and leachables, Laminate delamination and edge exposure and Mold and bacterial growth in damp interior on the Granite Gear and not on the REI Co-op.
  • We flag UV degradation and additive leaching, Microplastics from mechanical wear and Odor and volatile organic compounds from manufacturing on the REI Co-op and not on the Granite Gear.
  • The Granite Gear is Nylon with eVent laminate and silicone coating where the REI Co-op is Polypropylene storage bin, no water-resistant coating mentioned, 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 REI Co-op is the one to buy.
  • We are less certain about the Granite Gear grade, at 45% 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 →

More waterproof outdoor gear storage bags: see the full ranking