Never take your favorite performance hiking and climbing outerwear to the cleaners--especially if you value your waterproof finish. Granger's G-Wash Cleaner is a biodegradable formula specifically developed to clean without removing water repellant finishes or leaving a film that clogs porous the material found in Gore-Tex membranes and other waterproof/breathable fabrics. Like most Granger's products, G-Wash Cleaner is biodegradable and doesn't contain any chemical whiteners, UV brighteners or perfumes.