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Ergon SM E Mountain Core Prime Saddle Stealth Womens Small Medium E50 Park Tool logo patch above Color:Purple Haze Fast rolling tire ready Weight 202 SH02434 Park Tool logo patch above left pocket Fit Standard Material Cotton Gender Age Men's Color Black Size Medium Sleeve Style Short Defined Color Black It provides accurate heart rate and HRV data plus running dynamics with step speed loss — which helps runners improve their form when paired to a compatible smartwatch
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