ASICS Gel-Quantum 360 cm GS Running Shoe 100% Synthetic Imported Rubber sole Rear foot and forefoot gel cushioning systems: attenuates shock during impact and toe-off phases, and allows movement on multiple planes as the foot transitions through the gait cycle Fluid fit: asics fluid fit upper technology combines multi-directional stretch mesh with stretch reinforcements that adapt to the athlete's foot, creating a truly customized glove-like fit Seamless construction Trusstic system: reduces the weight of the sole unit while retaining the structural integrity of the shoe Solute midsole material: a lighter weight midsole compound than asics' standard eva and speva. also features enhanced cushioning and durability