The insole works along the bottom of the brooks ghost 14 women’s sale, helping to support the bottom of the foot. The midsole is the material along the inner portion of the shoe to provide cushioning. Frequently, it’s made of foam that’s soft enough for comfort while rigid enough to offer ankle support. The outsole, however, is what’s most important when it comes to traction and stability. Often, this is the portion of your shoe that makes contact with the ground.