The new edition of the Gel-Fuji Attack 4 men’s running shoe is designed with Trusstic System technology, helping to reduce the overall weight of the sole unit while still retaining the structural integrity of the shoes. The Asics Gel Fuji Attack 4 boasts an outsole made from NC rubber, this compound contains more natural rubber content than traditional solid rubber, ensuring increased traction on varied surfaces. Asics High Abrasion Rubber is also used in the outsole to further deliver cushioning, durability and a stable underfoot.This running shoe is about going fast over the most enduring terrain, ensuring your foot is shielded from impactThe Rearfoot GEL Cushioning System helps to attenuate the shock during the impact stage of your gait cycle, this allows for a smoother transition to midstance. A Rock Protection Plate protects your foot against sharp objects such as rocks and branches so that there is reduced distraction while you're running. The midsole is made from Solyte material which is a lighter weight compound than the ASICS standard. It also enhances the level of cushioning and durability the shoe provides, fused with the SpEVA midsole which improves the bounce-back characteristics and decreases midsole breakdown.