Man therefore gets his vitamin A by eating plants which are rich in carotenes or by eating those parts of domestic animals which are rich in the vitamin itself: liver, butter and cream from milk; egg yolk; and cod-liver oil.
If the vamp is too loose, your heel may slip out of the shoe, while a vamp that is too tight can cause toe pain or numbness. Counter. The heel counter is the back of the shoe that holds the heel in place. A stiff counter offers greater heel control and stability.
Flat: Walking shoes should have a relatively flat heel, although you may not be able to tell this from the outside appearance. Inside the shoe, it may have more or less drop between the heel and the toe. Look for shoes with a heel drop of fewer than 8 millimeters. You can even find zero heel drop shoes.