Hemp is the stereotypical eco fiber, the quintessential burlap sac that many erroneously associate with sustainable clothing. However, it can now be used in combination with organic cotton for increased softness or with silk for for a luxurious blended fabric.  Made from the cannabis plant, hemp is naturally insect resistant, and is good for the soil, so it doesn't need the same pesticides that cotton does. However it does use chemicals to break it down into fiber, and is no longer the sustainability front runner it once was. In the current sustainable fashion world, hemp is used sparingly, and usually in blends.