Nano Backpack vs Global Pro Backpack: which is safer?

Gregory Nano Backpack is our pick: better on PFAS and on the overall hazard picture.

Our pick

Gregory

Nano Backpack

PFAS grade

F 20/100

Overall grade

F 12/100

Verdict

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Hazard flags

⚑ 2

Material

Nylon/polyester with water-repellent coating water-resistant finish

Confidence

45%

Possiblewater-repellent coating (water-repellent coating) finish composition

PossibleCoating degradation and microfiber shedding

Why this grade

Topo Designs

Global Pro Backpack

PFAS grade

F 20/100

Overall grade

F 6/100

Verdict

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Hazard flags

⚑ 2

Material

recycled nylon with water-repellent coating treatment

Confidence

45%

Possiblewater-repellent coating chemistry and fluorinated compounds

Reportedwater-repellent coating degradation and microparticle shedding

Why this grade

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: see the full ranking