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.
The other way that you can do it on a slip on and a lace up would be a tongue pad. On a tongue pad you just place it down. It's self-adhering. Place it down underneath the tongue of the shoe so it takes up more area and anchors you into the heel. Last but not least is a heel grip.