Details 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 oz. Heel Height: 21mm Forefoot Height: 11mm Style #: S660J.9614 UPC #: 191497478165 Tech & Materials AHAR® Outsole Acronym for ASICS High Abrasion Rubber. Placed in critical areas of the outsole for exceptional durability. Trusstic System® technology Reduces the weight of the sole unit while retaining the structural integrity of the shoe. Solyte® Midsole Material A lighter weight midsole compound than ASICS standard EVA and SpEVA® midsoles. Also features enhanced cushioning and durability. Rearfoot and Forefoot GEL® Technology Cushioning System Attenuates shock during impact and toe-off phases, and allows movement in multiple planes as the foot transitions through the gait cycle.