Women's Fresh Foam Arishi v4 Shoes vs Fast-Trac Nitro 4 Gore-tex Men's Waterproof Trail Running Shoes: which is safer?

Where these two actually differ

• We flag Azo dyes and color-based toxins on the New Balance and not on the Puma.
• We flag PFAS in Gore-tex membrane and DWR coating, Azo dyes in synthetic textiles, Formaldehyde resins in textile finishing and Microplastic shedding from synthetic uppers and sole on the Puma and not on the New Balance.
• Both carry a flag for Antimony in polyester, so neither choice avoids it.
• The New Balance is Mesh upper, Fresh Foam midsole, rubber outsole where the Puma is Gore-tex membrane with textile upper, unspecified DWR treatment, 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 New Balance is the one to buy.
• We are less certain about the Puma grade, at 45% confidence against 72%, because it discloses less.