SPENCO for Her Cushioning with Q FACTOR Technology A softer combination of support and shock absorption for athletic and active footwear. Five sizes fits women's 3-12 SPENCO Q FACTOR Women's Cushioning Insoles provide better body alignment for women. These insoles are specially designed for a woman's foot; because of a wider pelvis, women usually have a greater Q-Angle (the angle between the quadriceps muscle and the patellar tendon) which places more pressure on the knees, hips and back. Features and Benefits of SPENCO Women's Q FACTOR Cushioning Insoles: A gel heel plug absorbs shock and returns energy to the heel. Dual Density polyurethane cradles the heel and supports the arch. Exclusive, closed-cell, nitrogen-injected material absorbs shock. Extra Cushioning in the forefoot helps relieve pain under the ball of the foot. Q FACTOR Technology helps provide proper support and alignment, improving balance and helping reduce the risk of injury. For Normal and Flat foot types. CAUTION: Not recommended for those with Diabetes.