Most rainwear has a treatment on the exterior of the material called a durable water repellent (DWR). Even jackets with a breathable and waterproof membrane, like Gore-Tex®, need a working DWR on the exterior to keep the internal cloth from becoming saturated with water.The DWR finish on technical gear can diminish in performance for a number of reasons; including heavy use, years of use, body oil, dirt, and by the number of times you have washed the gear. The good news is that sometimes the repellent can be revived by using a technical gear wash in a washing machine, such as Nikwax Tech Wash and following the wash with a few minutes in a clothes dryer on a low or medium heat setting. If your gear falls into the category of heavy use, and/or if you tried to rejuvenate the gear by using a tech wash and drying (as above described), and the gear is still not water repellent, you may need to re-apply a DWR via a spray-on or wash-in method. You may also find that as you examine the wear on your gear that you may have to do some other forms of repair, including sealing the seams and fixing any tears or wear spots in the material.