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.
Cushioning: Walking causes less impact to your feet than running does. As a result, a true walking shoe doesnât require as much cushioning in the heel as a traditional running shoe provides. Walking shoes often focus on providing cushioning under the ball of the foot.