ASICS Men's GEL-Impression 3 Running Shoe 100% Synthetic and mesh Rubber sole AHAR High Abrasion Rubber is placed in critical areas of the outsole for exceptional durability Lightweight midsole provides shock attenuation throughout the gait cycle Rearfoot GEL Cushioning System attenuates shock during impact phase and allows for a smooth transition to midstance Solid Rubber Outsole provides enhanced durability and traction Trusstic System reduces the weight of the sole unit while retaining the structural integrity of the shoe