Men's Topo Athletic Phantom 4 Road Shoe Clifton - LT2 (Anaerobic Threshold): The

- LT2 (Anaerobic Threshold): The point where lactate builds up faster than it can be cleared

Lightweight ceramic aluminum material adds durability

​Thanks to an energetic midsole foam and a propulsive carbon plate

Fresh and new non-marking outsole with deep flex grooves and rubber traction pods and Jazz Original-inspired triangular lugs

Men's Topo Athletic Phantom 4 Road Shoe Clifton - LT2 (Anaerobic Threshold): TheThe 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. They've 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,