TOPO ATHLETIC WOMEN'S PHANTOM 2 SHOES FOR ROAD RUNNINGBuilt to take on your long runs, daily training, and recovery runs, Phantom 2 delivers the comfort of its predecessor, now with even more cushioning and response. The overlay-free engineered mesh upper made of 30% recycled materials keeps the foot cool and comfortable, with reinforced security through the midfoot. With a 3 mm higher stack height, the updated midsole features a ZipFoam core for a snappy, yet soft feel underfoot. The external TPU heel counter integrates with the midsole to keep the foot seated over the platform for a secure and stable ride. Discover the Topo DifferenceRoomy Toe Box: Helps toes align in their natural position for better balance, stability, and comfort. Secure Midfoot and Heel: So you feel nimble, agile and secure, no matter the terrain. Low to Toe Heel: Encourages a midfoot strike when running so you move naturally through the gait cycle.