Trail Gear Waterproof Dry Bag Backpack vs Ultimate Dry Sack 3-Pack: which is safer?
These two grade almost identically. Pick on price and preference; neither has a PFAS edge.
Marmot
Trail Gear Waterproof Dry Bag Backpack
PFAS grade
F 20/100
Overall grade
F 12/100
Verdict
Skip
Hazard flags
⚑ 2
Material
Ripstop nylon with water-repellent coating
Confidence
45%
Possiblewater-repellent coating chemistry (non-PFAS hazards)
PossibleMold and bacterial growth in storage
Outdoor Products
Ultimate Dry Sack 3-Pack
PFAS grade
F 20/100
Overall grade
F 12/100
Verdict
Skip
Hazard flags
⚑ 2
Material
Nylon/polyester with waterproof coating, unspecified
Confidence
45%
Possiblewater-repellent coating chemistry (fluorinated or fluorine-free unknown)
PossibleCoating degradation and microparticle shedding
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 bags: see the full ranking