Run hard, land soft. The GEL-Quantum 360™ Knit shoe offers 360 degrees of our GEL® technology cushioning, balancing high performance and maximum comfort. A new stretch knit upper surrounds the foot in a custom, sock-like fit elevating this GEL-Quantum shoe to another level – helping you power through running and cross-training workouts Weight: 12.6. Heel Height: 22. Forefoot Height: 12.