Derma Primer® Modified Unna Boot Compression Bandage with Calamine 3" x 10 yds, Latex-freeDerma Primer® Modified Unna Boot Compression Bandage is a 100% soft, cotton gauze bandage that has been evenly impregnated with a nonhardening, zinc oxide paste. It is used in the ambulatory treatment of venous stasis leg ulcers and lymphatic edema, minor sprains, strains, fractures, thrombophlebitis and skin grafts on burn wounds. This bandage is packaged in a unique, vacuum-sealed pouch.Derma Primer® Modified Unna Boot Compression Bandage is made with nonraveling, thread locked gauze.Contains no gelatin which prevents the hardening or caking of the bandage.Made without preservatives.Easy to open.