Nikwax Tech Wash Travel Gel Tube, 3 oz, Easy way to keep your waterproof garments performance up while traveling. Simply use this gentle solution in your home washing machine and reap the benefit of revitalized waterproofing and breathability while you extend the usable life of your garment Solution works by lifting out dirt and detergent residues that attract water molecules and promote wetting out to and this solution does not leave residues behind.