The Annex Athletic shoe features an Xergy anti-fatigue foam midsole that absorbs shock and returns energy, an oil- and slip-resistant rubber outsole, an athletic-inspired design with leather and TecTuff abrasion-resistant material, a non-metallic nano safety toe, and the HYTEST-exclusive Terrapin internal met-guard technology. This technology is built with dual-density TPU: The external shell deflects energy away from the foot while the inside cushion layer absorbs shock.
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