Nikwax TX.Direct® Wash-In is the market leader. It is easy and quick to apply in a washing machine, and its highly Durable Water Repellency (DWR) develops on air drying. The washing machine application ensures that the treatment goes right through the garment, treating seams, tapes and cords, as well as the fabric. Also, as the need for tumble drying is removed, this saves energy and protects more vulnerable, older, garments from heat. Nikwax TX.Direct® Wash-In has been specifically designed and optimized for breathable waterproof garments; it leaves a flexible water repellent treatment on individual fibers allowing moisture vapour to pass through, maintaining breathability.