The GEL-Venture 5 provides great fit and everyday comfort, with Rearfoot GEL Cushioning System and a rugged outsole ideal for a variety of terrains. Features Rearfoot GEL Cushioning System: Attenuates shock during impact phase and allows for a smooth transition to midstance. It has a sockliner which can be removed to accommodate a medical orthotic. The trail-specific outsole features reversed lugs to provide uphill and downhill traction on all types of terrain, made of AHAR: stands for ASICS High Abrasion Rubber. Placed in critical areas of the outsole for exceptional durability.