Designed for women who experience foot discomfort when wearing flats. Provides superior all-day comfort so you can wear your shoes longer. Cushion flex Technology in the arch works dynamically with your foot, flexing with each step to provide arch support. Also with a super-soft top cloth to keep feet cool & dry, Heel Cupping for support and ball of foot cushions to relieve pressure. Sleek and slim 3/4 foot length design won't crowd toes and won't make shoes feel tight. Designed to fit comfortably in low-heeled dress shoes, casual shoes and boots. No trimming required.