Mens Topo Phantom 4 toe socks thanks to its touchscreen-compatible thumb

thanks to its touchscreen-compatible thumb and index finger

cushioned ride with exceptional grip and precise foothold

Plug-n-Play system: A 'click' valve that makes it easy to disconnect the tube from the bladder

Hybrid ASICSGRIP™ - Improves the outsole grip

Use the cover to protect your hands in wet and windy conditions

Mens Topo Phantom 4 toe socks thanks to its touchscreen-compatible thumbBig Sky Run Co Description The latest update to Topo's 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. Topo's increased the stack height by 2mm, now offering a 35 30mm platform, providing extra cushion. Topo's ZipFoam compound is lighter, softer, and more responsive than ever. The Topo Athletic Phantom 4