How many jackets/garments can I treat per bottle?
Depending on how much you use the 250ml bottle will treat around 2 garments (XL sized jackets) per bottle.
How long will the treatment last after application?
The efficiency of the DWR applied to the surface of the technical apparel will gradually wear off over time with normal wear and washing, so we recommend refreshing the coating every 3 months depending on wear and washing.
All waterproof clothing needs to be cared for to keep it performing at its best. Using ordinary household detergent will ultimately break down the DWR and impair the water repellent due to the heavy surfactants in these products. If you notice that water is no longer beading on the surface of your garment and soaking into the fabric then it is time to refresh with re-proofer.
Can you use Rain Shield on normal clothes?
The spray will add a DWR coating to the fabric to provide some water resistance, but you cannot make non-waterproof fabric fully waterproof.