VIONIC advises that these are designed for everyday use: fits all types of womens casual and heeled shoes. Take care of your feet the way they take of you, with the amazingly-supportive Dress Slimfit orthotic from VIONIC. Designed for everyday use and fits all types of fashion and casual footwear. Soft 100 percent polyester microfiber topcloth has EcoFresh earth friendly microbe shield technology to help safeguard against odor-causing bacteria. Shock-absorbing polyurethane materials provide comfort and flexibility to ensure a custom fit every time. Supports the foot with a built-in rear-foot angle which helps realign the foot to its natural position. Supports the metatarsal bones, and helps provide effective relief from the ball-of-foot pain, as well as painful bunions, corns and calluses. For best results, it is recommended that you replace your orthotics every 12 months.