The Aetrex X521 is a High Performance Running Shoe.
Made from technologically advanced leathers, polyurethanes, and moisture transferring polyesters.
Biomechanically engineered, multi-density midsole features a Carboplast foot bridge.
Open air sandwich mesh upper and a high, wide toe box for forefoot comfort.
Available in three widths, Medium (B,C), Wide (D,E), Extra Wide (EE, 3E).

Product Description
The Aetrex X521 High Performance Runner is made from technologically advanced leathers, polyurethanes, and moisture transferring polyesters to keep the foot in a healthy, cool environment. The biomechanically engineered, multi-density midsole features a Carboplast foot bridge for motion control and stability. Special features include an Airlex 2 way open air sandwich mesh upper and a high, wide toe box for forefoot comfort. Available in three widths, Medium (B,C), Wide (D,E), Extra Wide (EE, 3E).

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