As the industry's first 40 singles triblend
Max out your miles with the Altra FWD Via 2
achy feet on longer runs
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Anatomically shaped cork-latex footbed
TOPO PHANTOM 4 MEN SHOE As the industry's first 40The latest update to our high cushion neutral trainer, the Phantom 4, delivers an even more cushioned, responsive, and comfortable ride. The all new upper, midsole, and outsole design gives the shoe a sleek, dynamic look. Weve increased the stack height by 2mm, now offering a 35 30mm platform, providing extra cushion. Our ZipFoam compound is lighter, softer, and more responsive than ever. The Topo Athletic Phantom 4 is perfect for daily miles,