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. Trusstic System technology - Reduces the weight of the sole unit while retaining the structural integrity of the shoe. Seamless Construction - The use of seamless materials reduces the potential for irritation and friction caused by traditional stitches and seams. AHAR Outsole - Acronym for ASICS High Abrasion Rubber. Placed in critical areas of the outsole for exceptional durability. Heel Clutching System Technology - Exoskeletal heel counter provides improved support and creates improved heel fitting environment. A totally disruptive new take on an unrivaled runner, the GEL-Quantum 360 4 provides premium performance and extreme endurance. Cushioned with 360 degrees of our signature GEL technology, this shoe delivers a responsive, spring-loaded ride that doesn't quit. The all-new suede upper surrounds your foot with comfort and locked-down support. Weight: 12.80. Heel Height: 22. Forefoot Height: 12.