Ultimate Shock Absorption footbeds can be trimmed at the toe with scissors for an exact fit. Removing footbeds daily and replacing them with dry ones right before wearing, will help protect against mildew, bacteria, and odor. -Dual Density Polyurethane. One density under heel and ball strike areas provides excellent shock absorption. Second density under balance of foot provides all day cushioned comfort. -Comfort weave lining wicks away moisture for drier, cooler, and healthier feet year round. -Built up arch provides maximum support and comfort. -Contoured heel cup gives superior fit and support. Shock absorption and cushioned comfort with every step.