Nikwax TX.Direct Wash-in Waterproofing is easy to use, safe, high performance wash in waterproofing that revives breathability and maintains internal wicking properties of your waterproof garments. 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, it saves energy and protects more vulnerable, older, garments from heat. Nikwax TX.Direct® Wash-in adds Durable Water Repellency (DWR), which prevents water absorption, whilst maintaining breathability, keeping you dry and comfortable when you're active outside in damp or wet conditions.