The Brooks Glycerin Flex and On Cloudboom Volt PAF are both neutral road running shoes. The Glycerin Flex costs about $110 less (from $170).
Specs side by side
| Spec | Glycerin Flex | Cloudboom Volt PAF |
|---|---|---|
| Price | $170 | $280 |
| Rating | 4.4 / 5 (542 reviews) | — |
| Weight | 8 oz | 7.8 oz |
| Heel-to-toe drop | 6 mm | 6 mm |
| Cushioning | Max Cushioning | — |
| Support | Neutral | Neutral |
| Surface | Road | Road |
| Available for | Men & Women | Men & Women |
Specs and prices from Brooks and On, checked 2026-11-02. Weight is usually for a men's size 9–10.
Which should you get?
Get the Glycerin Flex if…
- you want to spend less
Get the Cloudboom Volt PAF if…
- it fits you better or you like its colors
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