Example 1: A raincoat is often made from nylon. It helps to keep you dry when you go outside during a rainstorm.
Example 2: Waterproof boots are usually made from rubber. They keep your feet dry when you walk through puddles.
Example 3: A waterproof backpack might be made from polyester. It protects your school books from getting wet in the rain.
Fun Fact: Some waterproof clothes also have a special coating that helps water slide right off them!