Unna's boot

It can also be used as a supportive bandage for sprains and strains of the foot, ankle and lower leg.

The gauze is impregnated with a thick, creamy mixture of zinc oxide and calamine to promote healing.

The Unna’s Boot itself is a compression dressing, usually made of cotton, that contains zinc oxide paste.

The zinc oxide paste in the Unna’s Boot helps ease skin irritation and keeps the area moist.

Evidence indicates that both are equally effective in healing venous stasis ulcers — a slow process in the best of circumstances, often taking 2–6 months.