ShockDoctor v3.0 footbeds combine advanced technology state-of-the-art shock absorbing and biomechanical design features in an insert, which stabilizes and supports the foot in a natural position. The result: reduced foot, leg and lower back pain. The ShockDoctor features an exclusive Direct Power Contour that actually forms to the heel, midfoot, forefoot and toe area to provide maximum support and comfort. To the eye, it looks like a topographic map. To the foot, this surface enhances shock absorption, improves balance and maximizes energy. Hand wash and air dry. Specify men's/women's sizes.