| Threat | Effect | Rule |
|---|---|---|
| Machine washing | Agitation breaks down foam cell structure | Never machine wash |
| Tumble dryer | Heat causes permanent compression | Never machine dry |
| Radiator drying | Heat warps midsole shape | Always air dry |
| Direct sunlight | UV degrades EVA over time | Dry in shade |
| Prolonged moisture | Softens foam bonds | Remove insole and air after wet runs |
Rotate shoes — allowing foam to decompress between runs extends lifespan. Air dry immediately after wet runs — do not store wet shoes. Use shoes for their intended surface — road shoes on roads, trail shoes on trail.
The shoe feels noticeably less cushioned than when new. The midsole visibly compresses and does not return to original shape. You feel more impact through the foot than before.
Typical foam lifespan in a well-maintained running shoe: 400–500 miles.
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Source: general running shoe care guidance aligned with saucony.com care recommendations.