Over time dirt can make its way into the outer layers of fabric of your outerwear, which will reduce the ability for moisture to escape. Remove this dirt by throwing your waterproof gear in the wash (always checking your pockets). Make sure to use regular liquid detergent and not fabric conditioner, bleach, or powdered detergents (these can remove the DWR coating). Most importantly, never dry clean your outerwear. When finished, you can hang dry or tumble dry on warm and gentle setting. Once completely dry, give it an extra 10-20 minutes in the dryer to help reinvigorate the water-repellent coating on the outer surface. If you don’t have a dryer, you can iron on a warm setting and no steam.
All waterproof outerwear utilizes a DWR (Durable Water Repellent) coating to improve breathability. This coating is what makes water bead off the surface of your garment. Over time, or after heavy use, this coating may wear off, which allows water to saturate or “wet out” the outer layer of your gear. While precipitation shouldn’t penetrate through the inner layers of your gear, it will diminish the overall breathability.
There are some great products on the market. We recommend Grangers or Nikwax spray-on variants. Spray-on is preferred so you are able to apply the new DWR coating to the outer layer of fabric only.