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Look for laminate layers: Most technical waterproof jackets are called two-layer or three-layer jackets. These layers typically consist of fabric treated with a water repellent, such as Durable Water Repellent, a thin mesh used to release water vapor, and a protective inner liner underneath. In general, for greater durability, you’ll want to look for layers that are already laminated together, not just a water repellant. That’s the advice of Amber Williams, a consumer science educator and lecturer at Utah State University.
Waterproof and breathable grade: Manufacturers typically rate each fabric based on its water resistance and breathability. For example, a raincoat with a water resistance rating of 20,000 means that if you have an infinitely long 1″ square tube, you can pour 20,000mm of water on the fabric and it will start seeping in (over 65 feet!). A breathability rating of 20,000 means that 20,000 grams of water vapor can travel through the fabric in the other direction. While a higher breathability rating might look better, you might want to think twice if you’ll be out in the cold. Body heat can escape the breathable jacket almost as easily as water vapor.
Fantastic fabrics: Gore-Tex remains the gold standard when it comes to water resistance. But every company is experimenting with new weaving techniques, especially PFC-free waterproofing. Future Lights of the North Face is a spider-weight waterproof and breathable fabric that allows designers to create garments with fewer seams. Look for ultra-lightweight waterproof leggings and other outdoor clothing as soon as possible.
Check seams and zips: If you want to make your raincoat more durable than an amusement park cape, look at the seams. The shoulders are a particularly vulnerable area, as most outdoor sports require you to carry a pack that rubs and damages them. “Design lines look really sexy, but over time, they don’t last that long,” says Williams. Other features to look for include plasticizing, waterproof zippers, and a zippered cover. That’s why our raincoat options are so expensive – lots of new fabric techniques and lots of design details!
Take care of your jacket: You can greatly extend the life of your items by taking good care of them. Hang up your jacket – don’t stuff it into a rough little thing bag. If you see stains from oil, dirt, or sunscreen, or if you notice no more water beads on the surface, you need to wash it. Follow the manufacturer’s instructions. You may need a specialized cleaner—many fabric cleaners leave residues that can interfere with DWR performance. Avoid using fabric softeners, bleach, dry cleaning or dryers.
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