Grafco Unna's Boot Dressing is intended for use as therapy for peripheral circulatory conditions and certain static conditions of the foot and leg (e.g. foot fractures, sprains and strains). This Product should not be used to treat acute pulmonary edema, cellulitis, deep vein thrombosis, arterial insufficiency, infected venous ulcers or if sensitivity to any of the ingredients. Can be used as "flexible cast" in treatment of sprains, strains and fractures. Always ready to use and easy to apply. Premium 100% cotton bandage coated with zinc oxide; also available with calamine (ferric oxide). Made in U.S.A. in ISO 13485:2016 certified manufacturing facility.