The North Face Summit Vectiv Sky 2 is a lightweight, propulsive short-distance trail racing shoe offering improved cushioning, grip, and responsiveness over its predecessor.
The Rocket X 3 offers a softer, more stable, and more comfortable marathon ride while the X 2 delivers firmer, snappier propulsion and greater durability.
Top running shoes balance maximal cushioning, energy return, carbon-plate propulsion, lightweight race-day speed, and trade-offs between durability and weight.