Gore-Tex

Gore-Tex is a material that people use to make waterproof clothing, shoes, and accessories, like gloves and hats. It's different than normal fabrics because it has thousands of tiny holes that let sweat and heat escape, but are too small for water to get through. They call it a "membrane" or a "fabric barrier" because it's like a thin layer that sits between the outer layer of the clothes and the inside lining.

Think of it like an invisible umbrella that keeps you dry on the inside, but lets you breathe and stay comfortable.

Gore-Tex was invented by a man named Bob Gore in 1969, and since then it's become really popular for outdoor activities and sports, like hiking, camping, and skiing. You might have heard people say "Gore-Tex is the best" when they talk about waterproof coats or shoes.