Primer 3″ Modified Unna Boot with Calamine is a bandage of 100% cotton gauze evenly impregnated with a non-hardening zinc oxide paste. The Primer Unna Boot GL-300-1C is used in ambulatory management of venous stasis leg ulcers. It is also used in the management of lymphatic edema, thrombophlebitis, eczema of the leg, sports injuries, sprains, strains, minor fractures and as a protective bandage for grafts on burn wounds. Contains no preservatives. The roll measures 3″ x 10 yards.