These boots were made for walking. Shop the Rosie Mid Shaft Boot from Reformation, a mid-shaft boot with a kitten heel and scrunched silhouette. only tried on at home, new Details 50mm heel, mid-calf shaft. High-quality drapey glove nappa. Spot clean. This is a bovine vegetable tanned or chromium-free leather. Up to 90% of the world’s leather goes through a process called chrome tanning, which produces hazardous waste and is a human carcinogen. Unlike chrome tanning, vegetable tanning replaces chromium for natural things like bark or plant tannins.