Trailgate Gear Bin Green 140 L vs Ultra Sil Dry: which is safer?
REI Co-op Trailgate Gear Bin Green 140 L is our pick: better on PFAS and on the overall hazard picture.
Our pick
REI Co-op
Trailgate Gear Bin Green 140 L
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleUV degradation and additive leaching
PossibleMicroplastics from mechanical wear
PossibleOdor and volatile organic compounds from manufacturing
Sea to Summit
Ultra Sil Dry
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleVolatile organic compound (VOC) off-gassing from polyurethane coating
ReportedCoating degradation and microplastic shedding over time
PossibleSkin contact irritation or sensitization from coating or residual chemicals
Where these two actually differ
- 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 Sea to Summit.
- We flag Volatile organic compound (VOC) off-gassing from polyurethane coating, Coating degradation and microplastic shedding over time and Skin contact irritation or sensitization from coating or residual chemicals on the Sea to Summit and not on the REI Co-op.
- The REI Co-op is Polypropylene storage bin, no water-resistant coating mentioned where the Sea to Summit is ripstop nylon with silicone or polyurethane coating, 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.
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