Nikwax tech washtxdirect clean proof twin pack features this twin pack is perfect for cleaning and reproofing wet weather clothing nikwax tech wash is a wash in cleaner for waterproof clothing and equipment tech wash safely revitalises breathability and water repellency tech wash is a non detergent soap that can be used regularly to clean clothing and equipment without damaging the durable water repellent dwr coatings use tech wash instead of detergents or washing powder nikwax t