Years may wrinkle the skin but to give up enthusiasm wrinkles the soul.*
Imagine a high-tech fabric with the following properties: 1) It is waterproof, yet it allows moisture and heat to escape as needed. 2) It is flexible, tough, thick or thin in areas in which those properties are needed. 3) It has friction ridges to prevent slippage, and 4) it has the ability to seal itself when damaged. Does such a fabric really exist?
It does! This miracle fabric is, of course, human skin.