evo.com | Nikwax Waterproofing > Keep your hardshell hardcore. The Nikwax Hardshell DuoPack 1L contains a 1L bottle of Tech Wash and a 1L bottle of TX Direct Wash In. Tech Wash is a non-detergent, biodegradable liquid soap which removes dirt and detergent residues while leaving the water-repellent finish on waterproof clothing, equipment and sleeping bags intact. Nikwax TX Direct Wash-in adds water-repellency and revives breathability to your waterproof/breathable garments. Recommended for membranes such as Gore-Tex, Sympatex, Entrant, eVENT, and Ultrex TX.Direct Wash-In Easy to use, high performance waterproofer which adds water repellency and revives breathability without the need for tumble drying. For Cleaning and Waterproofing Rain and Snow Clothing Your raingear could be soaking up water just because it is dirty. Use Nikwax Tech Wash to clean it, and if it is fairly new, or recently re-waterproofed, the Durable Water Repellency (DWR) will be revitalized just from cleaning. But, once the garment has been thoroughly worn, you will need to add DWR, using Nikwax TX.Direct, awlays cleaning first with Nikwax Tech Wash. Tech Wash Tech Wash cleans, restores water repellency and revives breathability of your outdoor clothing and synthetic sleeping bags How to Use Nikwax Hardshell DUO-Pack | Nikwax Hardshell DuoPack 1L 2026