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On Running Cloud 5

Clothing
Could be cleaner.
Could be cleaner — real concerns, but manageable if you can't swap.
4
out of 10
The why
On Running Cloud 5 — Helion superfoam midsole, engineered mesh upper, no DWR treatment on non-waterproof model. Better Trail verified: 100% of On waterproof footwear PFAS-free as of 2025. Standard Cloud 5 has no waterproof treatment at all. Cleaner than Nike equivalent.
What's in it
Helion foam recycled mesh upper adhesives
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