Darco DCS #PlantarFasciitis Sleeve FS6 technology provides six graduated compression zones to help improve circulation and relieve the pain of edema associated with plantar fasciitis, heel spurs, and arch pain. Targeted medical grade compression zones provide a sustained stretch to the plantar fascia. Twenty four hour support allows wear while sleeping or under socks when active. Constructed of medical grade fabric. Not made with natural rubber latex.