A reproofer spray produced by the material manufacturers specially for treating the dry waxed duster coats and bags that we produce for Freight HHG. 

If you have washed your duster coat a couple of times we recommend using the reproofer spray to help reinforce the shower proof resistance of the coat. 

The material can be put into a 30º wash in the machine which is part of its practicality. But the waxed finish will not last indefinitely without being treated. So this is a useful thing to purchase once for longevity of your product.