Best used with 3EE - 6EE size shoes. ; Recommended footwear: Ski and snowboard boots, running and trail running shoes, hiking boots, work boots and walking shoes- all with removable insoles. ; Provides maximum support, stability and shock absorption, and is ideal for feet with medium to high arches. ; Extra deep cup cradles your heel's fat pad for natural shock absorption, while the biomechanically correct arch shape provides comfortable support. ; Friction control top cover with AgION antimicrobial treatment helps reduce odor-causing bacteria. ; Durable lightweight ¾ external polypropylene stabilizer cap provides optimum rear foot control and flexibility. ; Supports and aligns the bones of the foot, helping prevent heel pain, Plantar Fasciitis and other common foot problems. ; Each pair includes a User's Guide with information on sizing and trimming your new insoles, and the package is recyclable.