The GEL-Quantum 180™ TR shoe features 180 degrees of our signature GEL® Cushioning System to soften the impact of abrupt movements experienced in running and cross-training workouts. The full-length Trusstic System® technology combines spring-loaded ride with extra stability for quicker take-offs, and a rock-steady base to keep feet set while performing explosive lifts. Weight: 9.6. Heel Height: 21mm. Forefoot Height: 11mm.