Contour Insoles Provide Support, Balance, Stability, Shock-absorption and Comfort. Keeps Feet and Ankles in Proper Alignment to Ease Stress and Strain on Joints, Muscles and Ligaments Smiling Feet are professionally designed shoe inserts that keep your feet and ankles properly aligned. If you are out of alignment, your whole body could suffer ?ankles may break down, knees may bend inwards, hips may drop. Consequently your back comes to an unbalanced position and in an attempt to compensate it leads to strained muscles right from the shoulder to the lower back. Smiling Feet support your arch and properly align your feet and ankles to reduce pain and put your entire body in proper balance. Smiling feet are light weight, flexible and have specially designed vents that help the air to circulate under your feet. Great in all types of shoes. Its washable. One size fits all. No trimming needed. Just slip the Smiling Feet insoles into any pair of shoes to keep feet and ankles in proper alignment!!