Designed to provide unsurpassed comfort and support in most footwear styles. The L2220 orthotic features slow recovery IQ150 memory foam that customizes to the shape of the foot to help create a pressure free environment in your shoes. A soft CopperGuard top cover made form state of the art copper fibers help prevent bacteria, fungi and odor. Rearfoot Posted - Controls over-pronation and balances rearfoot. Recommended for flat or low arch feet. Forefoot Nuetral - Without metatarsal support for those not suffering from ball-of-foot discomfort.