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Bold, wild, and beautiful, the new Siren climbs with unrivaled strength and precision. Out-of-the-box comfort and an amazing fit. Lace-up design. Synthetic cowdura upper. Designed for all-around performance, from faces to cracks to indoor bouldering. Stealth® ONYXTM rubber outsole technology. Product measurements were taken using size 8.5, width B - Medium.

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Previously sold at: Zappos