Nikwax TX. Direct Spray-On. Nikwax TX. Direct Spray-On is an easy to use waterproofing product specifically developed for wet weather clothing. Nikwax TX. Direct provides highly Durable Water Repellency (DWR) which develops on air drying. Nikwax TX. Direct Spray-On maintains the breathability by allowing moisture vapour to pass through the fibres and is recommended for Gore-Tex items. Nikwax TX. Direct Spray-On allows for direct treatment on areas that require it most like elbows and seams. Nikwax TX. Direct is non-flammable, contains no harmful solvents and is free of harmful volatile organic compounds (VOCs) and fluorocarbons.